977880320

素因数分解:

$2^8\times 5^1\times {\mathrm{499}}^1\times {\mathrm{1531}}^1$

素因数の和:2051

約数の個数: 72

約数和(自身を含む): 2348556000

約数和(自身を除く): 1370675680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 499, 640, 998, 1280, 1531, 1996, 2495, 3062, 3992, 4990, 6124, 7655, 7984, 9980, 12248, 15310, 15968, 19960, 24496, 30620, 31936, 39920, 48992, 61240, 63872, 79840, 97984, 122480, 127744, 159680, 195968, 244960, 319360, 391936, 489920, 638720, 763969, 979840, 1527938, 1959680, 3055876, 3819845, 6111752, 7639690, 12223504, 15279380, 24447008, 30558760, 48894016, 61117520, 97788032, 122235040, 195576064, 244470080, 488940160, 977880320]

約数ペア:

[(1, 977880320), (2, 488940160), (4, 244470080), (5, 195576064), (8, 122235040), (10, 97788032), (16, 61117520), (20, 48894016), (32, 30558760), (40, 24447008), (64, 15279380), (80, 12223504), (128, 7639690), (160, 6111752), (256, 3819845), (320, 3055876), (499, 1959680), (640, 1527938), (998, 979840), (1280, 763969), (1531, 638720), (1996, 489920), (2495, 391936), (3062, 319360), (3992, 244960), (4990, 195968), (6124, 159680), (7655, 127744), (7984, 122480), (9980, 97984), (12248, 79840), (15310, 63872), (15968, 61240), (19960, 48992), (24496, 39920), (30620, 31936)]