18821608

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{1321}}^1$

素因数の和:1477

約数の個数: 32

約数和(自身を含む): 38311560

約数和(自身を除く): 19489952

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 137, 274, 548, 1096, 1321, 1781, 2642, 3562, 5284, 7124, 10568, 14248, 17173, 34346, 68692, 137384, 180977, 361954, 723908, 1447816, 2352701, 4705402, 9410804, 18821608]

約数ペア:

[(1, 18821608), (2, 9410804), (4, 4705402), (8, 2352701), (13, 1447816), (26, 723908), (52, 361954), (104, 180977), (137, 137384), (274, 68692), (548, 34346), (1096, 17173), (1321, 14248), (1781, 10568), (2642, 7124), (3562, 5284)]