20154328180

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{501601}}^1$

素因数の和:501665

約数の個数: 72

約数和(自身を含む): 50435077896

約数和(自身を除く): 30280749716

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 41, 49, 70, 82, 98, 140, 164, 196, 205, 245, 287, 410, 490, 574, 820, 980, 1148, 1435, 2009, 2870, 4018, 5740, 8036, 10045, 20090, 40180, 501601, 1003202, 2006404, 2508005, 3511207, 5016010, 7022414, 10032020, 14044828, 17556035, 20565641, 24578449, 35112070, 41131282, 49156898, 70224140, 82262564, 98313796, 102828205, 122892245, 143959487, 205656410, 245784490, 287918974, 411312820, 491568980, 575837948, 719797435, 1007716409, 1439594870, 2015432818, 2879189740, 4030865636, 5038582045, 10077164090, 20154328180]

約数ペア:

[(1, 20154328180), (2, 10077164090), (4, 5038582045), (5, 4030865636), (7, 2879189740), (10, 2015432818), (14, 1439594870), (20, 1007716409), (28, 719797435), (35, 575837948), (41, 491568980), (49, 411312820), (70, 287918974), (82, 245784490), (98, 205656410), (140, 143959487), (164, 122892245), (196, 102828205), (205, 98313796), (245, 82262564), (287, 70224140), (410, 49156898), (490, 41131282), (574, 35112070), (820, 24578449), (980, 20565641), (1148, 17556035), (1435, 14044828), (2009, 10032020), (2870, 7022414), (4018, 5016010), (5740, 3511207), (8036, 2508005), (10045, 2006404), (20090, 1003202), (40180, 501601)]