21316360

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{40993}}^1$

素因数の和:41017

約数の個数: 32

約数和(自身を含む): 51652440

約数和(自身を除く): 30336080

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 40993, 81986, 163972, 204965, 327944, 409930, 532909, 819860, 1065818, 1639720, 2131636, 2664545, 4263272, 5329090, 10658180, 21316360]

約数ペア:

[(1, 21316360), (2, 10658180), (4, 5329090), (5, 4263272), (8, 2664545), (10, 2131636), (13, 1639720), (20, 1065818), (26, 819860), (40, 532909), (52, 409930), (65, 327944), (104, 204965), (130, 163972), (260, 81986), (520, 40993)]