20467720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{5623}}^1$

素因数の和:5654

約数の個数: 64

約数和(自身を含む): 56689920

約数和(自身を除く): 36222200

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 182, 260, 280, 364, 455, 520, 728, 910, 1820, 3640, 5623, 11246, 22492, 28115, 39361, 44984, 56230, 73099, 78722, 112460, 146198, 157444, 196805, 224920, 292396, 314888, 365495, 393610, 511693, 584792, 730990, 787220, 1023386, 1461980, 1574440, 2046772, 2558465, 2923960, 4093544, 5116930, 10233860, 20467720]

約数ペア:

[(1, 20467720), (2, 10233860), (4, 5116930), (5, 4093544), (7, 2923960), (8, 2558465), (10, 2046772), (13, 1574440), (14, 1461980), (20, 1023386), (26, 787220), (28, 730990), (35, 584792), (40, 511693), (52, 393610), (56, 365495), (65, 314888), (70, 292396), (91, 224920), (104, 196805), (130, 157444), (140, 146198), (182, 112460), (260, 78722), (280, 73099), (364, 56230), (455, 44984), (520, 39361), (728, 28115), (910, 22492), (1820, 11246), (3640, 5623)]