90125980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{9067}}^1$

素因数の和:9154

約数の個数: 48

約数和(自身を含む): 219373056

約数和(自身を除く): 129247076

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 994, 1420, 1988, 2485, 4970, 9067, 9940, 18134, 36268, 45335, 63469, 90670, 126938, 181340, 253876, 317345, 634690, 643757, 1269380, 1287514, 2575028, 3218785, 4506299, 6437570, 9012598, 12875140, 18025196, 22531495, 45062990, 90125980]

約数ペア:

[(1, 90125980), (2, 45062990), (4, 22531495), (5, 18025196), (7, 12875140), (10, 9012598), (14, 6437570), (20, 4506299), (28, 3218785), (35, 2575028), (70, 1287514), (71, 1269380), (140, 643757), (142, 634690), (284, 317345), (355, 253876), (497, 181340), (710, 126938), (994, 90670), (1420, 63469), (1988, 45335), (2485, 36268), (4970, 18134), (9067, 9940)]