19917584

素因数分解:

$2^4\times {\mathrm{419}}^1\times {\mathrm{2971}}^1$

素因数の和:3398

約数の個数: 20

約数和(自身を含む): 38695440

約数和(自身を除く): 18777856

約数列:

[1, 2, 4, 8, 16, 419, 838, 1676, 2971, 3352, 5942, 6704, 11884, 23768, 47536, 1244849, 2489698, 4979396, 9958792, 19917584]

約数ペア:

[(1, 19917584), (2, 9958792), (4, 4979396), (8, 2489698), (16, 1244849), (419, 47536), (838, 23768), (1676, 11884), (2971, 6704), (3352, 5942)]