21798628

素因数分解:

$2^2\times {\mathrm{79}}^1\times {\mathrm{101}}^1\times {\mathrm{683}}^1$

素因数の和:867

約数の個数: 24

約数和(自身を含む): 39070080

約数和(自身を除く): 17271452

約数列:

[1, 2, 4, 79, 101, 158, 202, 316, 404, 683, 1366, 2732, 7979, 15958, 31916, 53957, 68983, 107914, 137966, 215828, 275932, 5449657, 10899314, 21798628]

約数ペア:

[(1, 21798628), (2, 10899314), (4, 5449657), (79, 275932), (101, 215828), (158, 137966), (202, 107914), (316, 68983), (404, 53957), (683, 31916), (1366, 15958), (2732, 7979)]