19870101

素因数分解:

$3^2\times {\mathrm{31}}^1\times {\mathrm{229}}^1\times {\mathrm{311}}^1$

素因数の和:577

約数の個数: 24

約数和(自身を含む): 29852160

約数和(自身を除く): 9982059

約数列:

[1, 3, 9, 31, 93, 229, 279, 311, 687, 933, 2061, 2799, 7099, 9641, 21297, 28923, 63891, 71219, 86769, 213657, 640971, 2207789, 6623367, 19870101]

約数ペア:

[(1, 19870101), (3, 6623367), (9, 2207789), (31, 640971), (93, 213657), (229, 86769), (279, 71219), (311, 63891), (687, 28923), (933, 21297), (2061, 9641), (2799, 7099)]