20318168

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{2473}}^1$

素因数の和:2571

約数の個数: 32

約数和(自身を含む): 41563200

約数和(自身を除く): 21245032

約数列:

[1, 2, 4, 8, 13, 26, 52, 79, 104, 158, 316, 632, 1027, 2054, 2473, 4108, 4946, 8216, 9892, 19784, 32149, 64298, 128596, 195367, 257192, 390734, 781468, 1562936, 2539771, 5079542, 10159084, 20318168]

約数ペア:

[(1, 20318168), (2, 10159084), (4, 5079542), (8, 2539771), (13, 1562936), (26, 781468), (52, 390734), (79, 257192), (104, 195367), (158, 128596), (316, 64298), (632, 32149), (1027, 19784), (2054, 9892), (2473, 8216), (4108, 4946)]