18973928

素因数分解:

$2^3\times {\mathrm{59}}^1\times {\mathrm{61}}^1\times {\mathrm{659}}^1$

素因数の和:785

約数の個数: 32

約数和(自身を含む): 36828000

約数和(自身を除く): 17854072

約数列:

[1, 2, 4, 8, 59, 61, 118, 122, 236, 244, 472, 488, 659, 1318, 2636, 3599, 5272, 7198, 14396, 28792, 38881, 40199, 77762, 80398, 155524, 160796, 311048, 321592, 2371741, 4743482, 9486964, 18973928]

約数ペア:

[(1, 18973928), (2, 9486964), (4, 4743482), (8, 2371741), (59, 321592), (61, 311048), (118, 160796), (122, 155524), (236, 80398), (244, 77762), (472, 40199), (488, 38881), (659, 28792), (1318, 14396), (2636, 7198), (3599, 5272)]