138654320

素因数分解:

$2^4\times 5^1\times 7^3\times {\mathrm{31}}^1\times {\mathrm{163}}^1$

素因数の和:228

約数の個数: 160

約数和(自身を含む): 390451200

約数和(自身を除く): 251796880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 35, 40, 49, 56, 62, 70, 80, 98, 112, 124, 140, 155, 163, 196, 217, 245, 248, 280, 310, 326, 343, 392, 434, 490, 496, 560, 620, 652, 686, 784, 815, 868, 980, 1085, 1141, 1240, 1304, 1372, 1519, 1630, 1715, 1736, 1960, 2170, 2282, 2480, 2608, 2744, 3038, 3260, 3430, 3472, 3920, 4340, 4564, 5053, 5488, 5705, 6076, 6520, 6860, 7595, 7987, 8680, 9128, 10106, 10633, 11410, 12152, 13040, 13720, 15190, 15974, 17360, 18256, 20212, 21266, 22820, 24304, 25265, 27440, 30380, 31948, 35371, 39935, 40424, 42532, 45640, 50530, 53165, 55909, 60760, 63896, 70742, 79870, 80848, 85064, 91280, 101060, 106330, 111818, 121520, 127792, 141484, 159740, 170128, 176855, 202120, 212660, 223636, 247597, 279545, 282968, 319480, 353710, 404240, 425320, 447272, 495194, 559090, 565936, 638960, 707420, 850640, 894544, 990388, 1118180, 1237985, 1414840, 1733179, 1980776, 2236360, 2475970, 2829680, 3466358, 3961552, 4472720, 4951940, 6932716, 8665895, 9903880, 13865432, 17331790, 19807760, 27730864, 34663580, 69327160, 138654320]

約数ペア:

[(1, 138654320), (2, 69327160), (4, 34663580), (5, 27730864), (7, 19807760), (8, 17331790), (10, 13865432), (14, 9903880), (16, 8665895), (20, 6932716), (28, 4951940), (31, 4472720), (35, 3961552), (40, 3466358), (49, 2829680), (56, 2475970), (62, 2236360), (70, 1980776), (80, 1733179), (98, 1414840), (112, 1237985), (124, 1118180), (140, 990388), (155, 894544), (163, 850640), (196, 707420), (217, 638960), (245, 565936), (248, 559090), (280, 495194), (310, 447272), (326, 425320), (343, 404240), (392, 353710), (434, 319480), (490, 282968), (496, 279545), (560, 247597), (620, 223636), (652, 212660), (686, 202120), (784, 176855), (815, 170128), (868, 159740), (980, 141484), (1085, 127792), (1141, 121520), (1240, 111818), (1304, 106330), (1372, 101060), (1519, 91280), (1630, 85064), (1715, 80848), (1736, 79870), (1960, 70742), (2170, 63896), (2282, 60760), (2480, 55909), (2608, 53165), (2744, 50530), (3038, 45640), (3260, 42532), (3430, 40424), (3472, 39935), (3920, 35371), (4340, 31948), (4564, 30380), (5053, 27440), (5488, 25265), (5705, 24304), (6076, 22820), (6520, 21266), (6860, 20212), (7595, 18256), (7987, 17360), (8680, 15974), (9128, 15190), (10106, 13720), (10633, 13040), (11410, 12152)]