21000309556

素因数分解:

$2^2\times {\mathrm{43}}^1\times {\mathrm{239}}^1\times {\mathrm{359}}^1\times {\mathrm{1423}}^1$

素因数の和:2068

約数の個数: 48

約数和(自身を含む): 37894348800

約数和(自身を除く): 16894039244

約数列:

[1, 2, 4, 43, 86, 172, 239, 359, 478, 718, 956, 1423, 1436, 2846, 5692, 10277, 15437, 20554, 30874, 41108, 61189, 61748, 85801, 122378, 171602, 244756, 340097, 343204, 510857, 680194, 1021714, 1360388, 2043428, 3689443, 7378886, 14624171, 14757772, 21966851, 29248342, 43933702, 58496684, 87867404, 122094823, 244189646, 488379292, 5250077389, 10500154778, 21000309556]

約数ペア:

[(1, 21000309556), (2, 10500154778), (4, 5250077389), (43, 488379292), (86, 244189646), (172, 122094823), (239, 87867404), (359, 58496684), (478, 43933702), (718, 29248342), (956, 21966851), (1423, 14757772), (1436, 14624171), (2846, 7378886), (5692, 3689443), (10277, 2043428), (15437, 1360388), (20554, 1021714), (30874, 680194), (41108, 510857), (61189, 343204), (61748, 340097), (85801, 244756), (122378, 171602)]