128565980

素因数分解:

$2^2\times 5^1\times {\mathrm{1931}}^1\times {\mathrm{3329}}^1$

素因数の和:5269

約数の個数: 24

約数和(自身を含む): 270209520

約数和(自身を除く): 141643540

約数列:

[1, 2, 4, 5, 10, 20, 1931, 3329, 3862, 6658, 7724, 9655, 13316, 16645, 19310, 33290, 38620, 66580, 6428299, 12856598, 25713196, 32141495, 64282990, 128565980]

約数ペア:

[(1, 128565980), (2, 64282990), (4, 32141495), (5, 25713196), (10, 12856598), (20, 6428299), (1931, 66580), (3329, 38620), (3862, 33290), (6658, 19310), (7724, 16645), (9655, 13316)]