21159490

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{1291}}^1$

素因数の和:1458

約数の個数: 32

約数和(自身を含む): 41860800

約数和(自身を除く): 20701310

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 149, 298, 745, 1291, 1490, 1639, 2582, 3278, 6455, 8195, 12910, 14201, 16390, 28402, 71005, 142010, 192359, 384718, 961795, 1923590, 2115949, 4231898, 10579745, 21159490]

約数ペア:

[(1, 21159490), (2, 10579745), (5, 4231898), (10, 2115949), (11, 1923590), (22, 961795), (55, 384718), (110, 192359), (149, 142010), (298, 71005), (745, 28402), (1291, 16390), (1490, 14201), (1639, 12910), (2582, 8195), (3278, 6455)]