391435520

素因数分解:

$2^8\times 5^1\times 7^2\times {\mathrm{79}}^2$

素因数の和:193

約数の個数: 162

約数和(自身を含む): 1104670602

約数和(自身を除く): 713235082

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 64, 70, 79, 80, 98, 112, 128, 140, 158, 160, 196, 224, 245, 256, 280, 316, 320, 392, 395, 448, 490, 553, 560, 632, 640, 784, 790, 896, 980, 1106, 1120, 1264, 1280, 1568, 1580, 1792, 1960, 2212, 2240, 2528, 2765, 3136, 3160, 3871, 3920, 4424, 4480, 5056, 5530, 6241, 6272, 6320, 7742, 7840, 8848, 8960, 10112, 11060, 12482, 12544, 12640, 15484, 15680, 17696, 19355, 20224, 22120, 24964, 25280, 30968, 31205, 31360, 35392, 38710, 43687, 44240, 49928, 50560, 61936, 62410, 62720, 70784, 77420, 87374, 88480, 99856, 101120, 123872, 124820, 141568, 154840, 174748, 176960, 199712, 218435, 247744, 249640, 305809, 309680, 349496, 353920, 399424, 436870, 495488, 499280, 611618, 619360, 698992, 707840, 798848, 873740, 990976, 998560, 1223236, 1238720, 1397984, 1529045, 1597696, 1747480, 1997120, 2446472, 2477440, 2795968, 3058090, 3494960, 3994240, 4892944, 4954880, 5591936, 6116180, 6989920, 7988480, 9785888, 11183872, 12232360, 13979840, 19571776, 24464720, 27959680, 39143552, 48929440, 55919360, 78287104, 97858880, 195717760, 391435520]

約数ペア:

[(1, 391435520), (2, 195717760), (4, 97858880), (5, 78287104), (7, 55919360), (8, 48929440), (10, 39143552), (14, 27959680), (16, 24464720), (20, 19571776), (28, 13979840), (32, 12232360), (35, 11183872), (40, 9785888), (49, 7988480), (56, 6989920), (64, 6116180), (70, 5591936), (79, 4954880), (80, 4892944), (98, 3994240), (112, 3494960), (128, 3058090), (140, 2795968), (158, 2477440), (160, 2446472), (196, 1997120), (224, 1747480), (245, 1597696), (256, 1529045), (280, 1397984), (316, 1238720), (320, 1223236), (392, 998560), (395, 990976), (448, 873740), (490, 798848), (553, 707840), (560, 698992), (632, 619360), (640, 611618), (784, 499280), (790, 495488), (896, 436870), (980, 399424), (1106, 353920), (1120, 349496), (1264, 309680), (1280, 305809), (1568, 249640), (1580, 247744), (1792, 218435), (1960, 199712), (2212, 176960), (2240, 174748), (2528, 154840), (2765, 141568), (3136, 124820), (3160, 123872), (3871, 101120), (3920, 99856), (4424, 88480), (4480, 87374), (5056, 77420), (5530, 70784), (6241, 62720), (6272, 62410), (6320, 61936), (7742, 50560), (7840, 49928), (8848, 44240), (8960, 43687), (10112, 38710), (11060, 35392), (12482, 31360), (12544, 31205), (12640, 30968), (15484, 25280), (15680, 24964), (17696, 22120), (19355, 20224)]