28005127960

素因数分解:

$2^3\times 5^1\times {\mathrm{1249}}^1\times {\mathrm{560551}}^1$

素因数の和:561811

約数の個数: 32

約数和(自身を含む): 63062100000

約数和(自身を除く): 35056972040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1249, 2498, 4996, 6245, 9992, 12490, 24980, 49960, 560551, 1121102, 2242204, 2802755, 4484408, 5605510, 11211020, 22422040, 700128199, 1400256398, 2800512796, 3500640995, 5601025592, 7001281990, 14002563980, 28005127960]

約数ペア:

[(1, 28005127960), (2, 14002563980), (4, 7001281990), (5, 5601025592), (8, 3500640995), (10, 2800512796), (20, 1400256398), (40, 700128199), (1249, 22422040), (2498, 11211020), (4996, 5605510), (6245, 4484408), (9992, 2802755), (12490, 2242204), (24980, 1121102), (49960, 560551)]