20854580

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{739}}^1$

素因数の和:848

約数の個数: 48

約数和(自身を含む): 46992960

約数和(自身を除く): 26138380

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 83, 85, 166, 170, 332, 340, 415, 739, 830, 1411, 1478, 1660, 2822, 2956, 3695, 5644, 7055, 7390, 12563, 14110, 14780, 25126, 28220, 50252, 61337, 62815, 122674, 125630, 245348, 251260, 306685, 613370, 1042729, 1226740, 2085458, 4170916, 5213645, 10427290, 20854580]

約数ペア:

[(1, 20854580), (2, 10427290), (4, 5213645), (5, 4170916), (10, 2085458), (17, 1226740), (20, 1042729), (34, 613370), (68, 306685), (83, 251260), (85, 245348), (166, 125630), (170, 122674), (332, 62815), (340, 61337), (415, 50252), (739, 28220), (830, 25126), (1411, 14780), (1478, 14110), (1660, 12563), (2822, 7390), (2956, 7055), (3695, 5644)]