21771490

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{223}}^1\times {\mathrm{751}}^1$

素因数の和:994

約数の個数: 32

約数和(自身を含む): 42448896

約数和(自身を除く): 20677406

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 223, 446, 751, 1115, 1502, 2230, 2899, 3755, 5798, 7510, 9763, 14495, 19526, 28990, 48815, 97630, 167473, 334946, 837365, 1674730, 2177149, 4354298, 10885745, 21771490]

約数ペア:

[(1, 21771490), (2, 10885745), (5, 4354298), (10, 2177149), (13, 1674730), (26, 837365), (65, 334946), (130, 167473), (223, 97630), (446, 48815), (751, 28990), (1115, 19526), (1502, 14495), (2230, 9763), (2899, 7510), (3755, 5798)]