128577980

素因数分解:

$2^2\times 5^1\times {\mathrm{1229}}^1\times {\mathrm{5231}}^1$

素因数の和:6469

約数の個数: 24

約数和(自身を含む): 270285120

約数和(自身を除く): 141707140

約数列:

[1, 2, 4, 5, 10, 20, 1229, 2458, 4916, 5231, 6145, 10462, 12290, 20924, 24580, 26155, 52310, 104620, 6428899, 12857798, 25715596, 32144495, 64288990, 128577980]

約数ペア:

[(1, 128577980), (2, 64288990), (4, 32144495), (5, 25715596), (10, 12857798), (20, 6428899), (1229, 104620), (2458, 52310), (4916, 26155), (5231, 24580), (6145, 20924), (10462, 12290)]