21171560

素因数分解:

$2^3\times 5^1\times {\mathrm{59}}^1\times {\mathrm{8971}}^1$

素因数の和:9041

約数の個数: 32

約数和(自身を含む): 48448800

約数和(自身を除く): 27277240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 59, 118, 236, 295, 472, 590, 1180, 2360, 8971, 17942, 35884, 44855, 71768, 89710, 179420, 358840, 529289, 1058578, 2117156, 2646445, 4234312, 5292890, 10585780, 21171560]

約数ペア:

[(1, 21171560), (2, 10585780), (4, 5292890), (5, 4234312), (8, 2646445), (10, 2117156), (20, 1058578), (40, 529289), (59, 358840), (118, 179420), (236, 89710), (295, 71768), (472, 44855), (590, 35884), (1180, 17942), (2360, 8971)]