129758840

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{97}}^1\times {\mathrm{631}}^1$

素因数の和:792

約数の個数: 64

約数和(自身を含む): 301008960

約数和(自身を除く): 171250120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 97, 106, 194, 212, 265, 388, 424, 485, 530, 631, 776, 970, 1060, 1262, 1940, 2120, 2524, 3155, 3880, 5048, 5141, 6310, 10282, 12620, 20564, 25240, 25705, 33443, 41128, 51410, 61207, 66886, 102820, 122414, 133772, 167215, 205640, 244828, 267544, 306035, 334430, 489656, 612070, 668860, 1224140, 1337720, 2448280, 3243971, 6487942, 12975884, 16219855, 25951768, 32439710, 64879420, 129758840]

約数ペア:

[(1, 129758840), (2, 64879420), (4, 32439710), (5, 25951768), (8, 16219855), (10, 12975884), (20, 6487942), (40, 3243971), (53, 2448280), (97, 1337720), (106, 1224140), (194, 668860), (212, 612070), (265, 489656), (388, 334430), (424, 306035), (485, 267544), (530, 244828), (631, 205640), (776, 167215), (970, 133772), (1060, 122414), (1262, 102820), (1940, 66886), (2120, 61207), (2524, 51410), (3155, 41128), (3880, 33443), (5048, 25705), (5141, 25240), (6310, 20564), (10282, 12620)]