128897660

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{2111}}^1$

素因数の和:2234

約数の個数: 48

約数和(自身を含む): 281014272

約数和(自身を除く): 152116612

約数列:

[1, 2, 4, 5, 10, 20, 43, 71, 86, 142, 172, 215, 284, 355, 430, 710, 860, 1420, 2111, 3053, 4222, 6106, 8444, 10555, 12212, 15265, 21110, 30530, 42220, 61060, 90773, 149881, 181546, 299762, 363092, 453865, 599524, 749405, 907730, 1498810, 1815460, 2997620, 6444883, 12889766, 25779532, 32224415, 64448830, 128897660]

約数ペア:

[(1, 128897660), (2, 64448830), (4, 32224415), (5, 25779532), (10, 12889766), (20, 6444883), (43, 2997620), (71, 1815460), (86, 1498810), (142, 907730), (172, 749405), (215, 599524), (284, 453865), (355, 363092), (430, 299762), (710, 181546), (860, 149881), (1420, 90773), (2111, 61060), (3053, 42220), (4222, 30530), (6106, 21110), (8444, 15265), (10555, 12212)]