18456464

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{997}}^1$

素因数の和:1107

約数の個数: 40

約数和(自身を含む): 38981880

約数和(自身を除く): 20525416

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 89, 104, 178, 208, 356, 712, 997, 1157, 1424, 1994, 2314, 3988, 4628, 7976, 9256, 12961, 15952, 18512, 25922, 51844, 88733, 103688, 177466, 207376, 354932, 709864, 1153529, 1419728, 2307058, 4614116, 9228232, 18456464]

約数ペア:

[(1, 18456464), (2, 9228232), (4, 4614116), (8, 2307058), (13, 1419728), (16, 1153529), (26, 709864), (52, 354932), (89, 207376), (104, 177466), (178, 103688), (208, 88733), (356, 51844), (712, 25922), (997, 18512), (1157, 15952), (1424, 12961), (1994, 9256), (2314, 7976), (3988, 4628)]