128893640

素因数分解:

$2^3\times 5^1\times {\mathrm{277}}^1\times {\mathrm{11633}}^1$

素因数の和:11921

約数の個数: 32

約数和(自身を含む): 291082680

約数和(自身を除く): 162189040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 277, 554, 1108, 1385, 2216, 2770, 5540, 11080, 11633, 23266, 46532, 58165, 93064, 116330, 232660, 465320, 3222341, 6444682, 12889364, 16111705, 25778728, 32223410, 64446820, 128893640]

約数ペア:

[(1, 128893640), (2, 64446820), (4, 32223410), (5, 25778728), (8, 16111705), (10, 12889364), (20, 6444682), (40, 3222341), (277, 465320), (554, 232660), (1108, 116330), (1385, 93064), (2216, 58165), (2770, 46532), (5540, 23266), (11080, 11633)]