20403940816

素因数分解:

$2^4\times 7^1\times {\mathrm{101}}^1\times {\mathrm{1803743}}^1$

素因数の和:1803859

約数の個数: 40

約数和(自身を含む): 45627508224

約数和(自身を除く): 25223567408

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 101, 112, 202, 404, 707, 808, 1414, 1616, 2828, 5656, 11312, 1803743, 3607486, 7214972, 12626201, 14429944, 25252402, 28859888, 50504804, 101009608, 182178043, 202019216, 364356086, 728712172, 1275246301, 1457424344, 2550492602, 2914848688, 5100985204, 10201970408, 20403940816]

約数ペア:

[(1, 20403940816), (2, 10201970408), (4, 5100985204), (7, 2914848688), (8, 2550492602), (14, 1457424344), (16, 1275246301), (28, 728712172), (56, 364356086), (101, 202019216), (112, 182178043), (202, 101009608), (404, 50504804), (707, 28859888), (808, 25252402), (1414, 14429944), (1616, 12626201), (2828, 7214972), (5656, 3607486), (11312, 1803743)]