18977235

素因数分解:

$3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{103}}^1\times {\mathrm{173}}^1$

素因数の和:355

約数の個数: 32

約数和(自身を含む): 31269888

約数和(自身を除く): 12292653

約数列:

[1, 3, 5, 15, 71, 103, 173, 213, 309, 355, 515, 519, 865, 1065, 1545, 2595, 7313, 12283, 17819, 21939, 36565, 36849, 53457, 61415, 89095, 109695, 184245, 267285, 1265149, 3795447, 6325745, 18977235]

約数ペア:

[(1, 18977235), (3, 6325745), (5, 3795447), (15, 1265149), (71, 267285), (103, 184245), (173, 109695), (213, 89095), (309, 61415), (355, 53457), (515, 36849), (519, 36565), (865, 21939), (1065, 17819), (1545, 12283), (2595, 7313)]