388487680

素因数分解:

$2^9\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{163}}^1$

素因数の和:219

約数の個数: 240

約数和(自身を含む): 1147560480

約数和(自身を除く): 759072800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 32, 35, 38, 40, 49, 56, 64, 70, 76, 80, 95, 98, 112, 128, 133, 140, 152, 160, 163, 190, 196, 224, 245, 256, 266, 280, 304, 320, 326, 380, 392, 448, 490, 512, 532, 560, 608, 640, 652, 665, 760, 784, 815, 896, 931, 980, 1064, 1120, 1141, 1216, 1280, 1304, 1330, 1520, 1568, 1630, 1792, 1862, 1960, 2128, 2240, 2282, 2432, 2560, 2608, 2660, 3040, 3097, 3136, 3260, 3584, 3724, 3920, 4256, 4480, 4564, 4655, 4864, 5216, 5320, 5705, 6080, 6194, 6272, 6520, 7448, 7840, 7987, 8512, 8960, 9128, 9310, 9728, 10432, 10640, 11410, 12160, 12388, 12544, 13040, 14896, 15485, 15680, 15974, 17024, 17920, 18256, 18620, 20864, 21280, 21679, 22820, 24320, 24776, 25088, 26080, 29792, 30970, 31360, 31948, 34048, 36512, 37240, 39935, 41728, 42560, 43358, 45640, 48640, 49552, 52160, 59584, 61940, 62720, 63896, 68096, 73024, 74480, 79870, 83456, 85120, 86716, 91280, 99104, 104320, 108395, 119168, 123880, 125440, 127792, 146048, 148960, 151753, 159740, 170240, 173432, 182560, 198208, 208640, 216790, 238336, 247760, 255584, 292096, 297920, 303506, 319480, 340480, 346864, 365120, 396416, 417280, 433580, 476672, 495520, 511168, 584192, 595840, 607012, 638960, 693728, 730240, 758765, 792832, 867160, 991040, 1022336, 1191680, 1214024, 1277920, 1387456, 1460480, 1517530, 1585664, 1734320, 1982080, 2044672, 2383360, 2428048, 2555840, 2774912, 2920960, 3035060, 3468640, 3964160, 4089344, 4856096, 5111680, 5549824, 6070120, 6937280, 7928320, 9712192, 10223360, 11099648, 12140240, 13874560, 19424384, 20446720, 24280480, 27749120, 38848768, 48560960, 55498240, 77697536, 97121920, 194243840, 388487680]

約数ペア:

[(1, 388487680), (2, 194243840), (4, 97121920), (5, 77697536), (7, 55498240), (8, 48560960), (10, 38848768), (14, 27749120), (16, 24280480), (19, 20446720), (20, 19424384), (28, 13874560), (32, 12140240), (35, 11099648), (38, 10223360), (40, 9712192), (49, 7928320), (56, 6937280), (64, 6070120), (70, 5549824), (76, 5111680), (80, 4856096), (95, 4089344), (98, 3964160), (112, 3468640), (128, 3035060), (133, 2920960), (140, 2774912), (152, 2555840), (160, 2428048), (163, 2383360), (190, 2044672), (196, 1982080), (224, 1734320), (245, 1585664), (256, 1517530), (266, 1460480), (280, 1387456), (304, 1277920), (320, 1214024), (326, 1191680), (380, 1022336), (392, 991040), (448, 867160), (490, 792832), (512, 758765), (532, 730240), (560, 693728), (608, 638960), (640, 607012), (652, 595840), (665, 584192), (760, 511168), (784, 495520), (815, 476672), (896, 433580), (931, 417280), (980, 396416), (1064, 365120), (1120, 346864), (1141, 340480), (1216, 319480), (1280, 303506), (1304, 297920), (1330, 292096), (1520, 255584), (1568, 247760), (1630, 238336), (1792, 216790), (1862, 208640), (1960, 198208), (2128, 182560), (2240, 173432), (2282, 170240), (2432, 159740), (2560, 151753), (2608, 148960), (2660, 146048), (3040, 127792), (3097, 125440), (3136, 123880), (3260, 119168), (3584, 108395), (3724, 104320), (3920, 99104), (4256, 91280), (4480, 86716), (4564, 85120), (4655, 83456), (4864, 79870), (5216, 74480), (5320, 73024), (5705, 68096), (6080, 63896), (6194, 62720), (6272, 61940), (6520, 59584), (7448, 52160), (7840, 49552), (7987, 48640), (8512, 45640), (8960, 43358), (9128, 42560), (9310, 41728), (9728, 39935), (10432, 37240), (10640, 36512), (11410, 34048), (12160, 31948), (12388, 31360), (12544, 30970), (13040, 29792), (14896, 26080), (15485, 25088), (15680, 24776), (15974, 24320), (17024, 22820), (17920, 21679), (18256, 21280), (18620, 20864)]