20416688

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{31123}}^1$

素因数の和:31172

約数の個数: 20

約数和(自身を含む): 40523448

約数和(自身を除く): 20106760

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 31123, 62246, 124492, 248984, 497968, 1276043, 2552086, 5104172, 10208344, 20416688]

約数ペア:

[(1, 20416688), (2, 10208344), (4, 5104172), (8, 2552086), (16, 1276043), (41, 497968), (82, 248984), (164, 124492), (328, 62246), (656, 31123)]