18708464

素因数分解:

$2^4\times {\mathrm{19}}^2\times {\mathrm{41}}^1\times {\mathrm{79}}^1$

素因数の和:166

約数の個数: 60

約数和(自身を含む): 39684960

約数和(自身を除く): 20976496

約数列:

[1, 2, 4, 8, 16, 19, 38, 41, 76, 79, 82, 152, 158, 164, 304, 316, 328, 361, 632, 656, 722, 779, 1264, 1444, 1501, 1558, 2888, 3002, 3116, 3239, 5776, 6004, 6232, 6478, 12008, 12464, 12956, 14801, 24016, 25912, 28519, 29602, 51824, 57038, 59204, 61541, 114076, 118408, 123082, 228152, 236816, 246164, 456304, 492328, 984656, 1169279, 2338558, 4677116, 9354232, 18708464]

約数ペア:

[(1, 18708464), (2, 9354232), (4, 4677116), (8, 2338558), (16, 1169279), (19, 984656), (38, 492328), (41, 456304), (76, 246164), (79, 236816), (82, 228152), (152, 123082), (158, 118408), (164, 114076), (304, 61541), (316, 59204), (328, 57038), (361, 51824), (632, 29602), (656, 28519), (722, 25912), (779, 24016), (1264, 14801), (1444, 12956), (1501, 12464), (1558, 12008), (2888, 6478), (3002, 6232), (3116, 6004), (3239, 5776)]