20369820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{257}}^1\times {\mathrm{1321}}^1$

素因数の和:1590

約数の個数: 48

約数和(自身を含む): 57300768

約数和(自身を除く): 36930948

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 257, 514, 771, 1028, 1285, 1321, 1542, 2570, 2642, 3084, 3855, 3963, 5140, 5284, 6605, 7710, 7926, 13210, 15420, 15852, 19815, 26420, 39630, 79260, 339497, 678994, 1018491, 1357988, 1697485, 2036982, 3394970, 4073964, 5092455, 6789940, 10184910, 20369820]

約数ペア:

[(1, 20369820), (2, 10184910), (3, 6789940), (4, 5092455), (5, 4073964), (6, 3394970), (10, 2036982), (12, 1697485), (15, 1357988), (20, 1018491), (30, 678994), (60, 339497), (257, 79260), (514, 39630), (771, 26420), (1028, 19815), (1285, 15852), (1321, 15420), (1542, 13210), (2570, 7926), (2642, 7710), (3084, 6605), (3855, 5284), (3963, 5140)]