129235640

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{227}}^1\times {\mathrm{331}}^1$

素因数の和:612

約数の個数: 64

約数和(自身を含む): 299756160

約数和(自身を除く): 170520520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 227, 331, 344, 430, 454, 662, 860, 908, 1135, 1324, 1655, 1720, 1816, 2270, 2648, 3310, 4540, 6620, 9080, 9761, 13240, 14233, 19522, 28466, 39044, 48805, 56932, 71165, 75137, 78088, 97610, 113864, 142330, 150274, 195220, 284660, 300548, 375685, 390440, 569320, 601096, 751370, 1502740, 3005480, 3230891, 6461782, 12923564, 16154455, 25847128, 32308910, 64617820, 129235640]

約数ペア:

[(1, 129235640), (2, 64617820), (4, 32308910), (5, 25847128), (8, 16154455), (10, 12923564), (20, 6461782), (40, 3230891), (43, 3005480), (86, 1502740), (172, 751370), (215, 601096), (227, 569320), (331, 390440), (344, 375685), (430, 300548), (454, 284660), (662, 195220), (860, 150274), (908, 142330), (1135, 113864), (1324, 97610), (1655, 78088), (1720, 75137), (1816, 71165), (2270, 56932), (2648, 48805), (3310, 39044), (4540, 28466), (6620, 19522), (9080, 14233), (9761, 13240)]