18639988

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{4157}}^1$

素因数の和:4239

約数の個数: 24

約数和(自身を含む): 34927200

約数和(自身を除く): 16287212

約数列:

[1, 2, 4, 19, 38, 59, 76, 118, 236, 1121, 2242, 4157, 4484, 8314, 16628, 78983, 157966, 245263, 315932, 490526, 981052, 4659997, 9319994, 18639988]

約数ペア:

[(1, 18639988), (2, 9319994), (4, 4659997), (19, 981052), (38, 490526), (59, 315932), (76, 245263), (118, 157966), (236, 78983), (1121, 16628), (2242, 8314), (4157, 4484)]