128504560

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{20333}}^1$

素因数の和:20425

約数の個数: 40

約数和(自身を含む): 302569920

約数和(自身を除く): 174065360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 158, 316, 395, 632, 790, 1264, 1580, 3160, 6320, 20333, 40666, 81332, 101665, 162664, 203330, 325328, 406660, 813320, 1606307, 1626640, 3212614, 6425228, 8031535, 12850456, 16063070, 25700912, 32126140, 64252280, 128504560]

約数ペア:

[(1, 128504560), (2, 64252280), (4, 32126140), (5, 25700912), (8, 16063070), (10, 12850456), (16, 8031535), (20, 6425228), (40, 3212614), (79, 1626640), (80, 1606307), (158, 813320), (316, 406660), (395, 325328), (632, 203330), (790, 162664), (1264, 101665), (1580, 81332), (3160, 40666), (6320, 20333)]