21096400

素因数分解:

$2^4\times 5^2\times {\mathrm{13}}^1\times {\mathrm{4057}}^1$

素因数の和:4088

約数の個数: 60

約数和(自身を含む): 54596332

約数和(自身を除く): 33499932

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 40, 50, 52, 65, 80, 100, 104, 130, 200, 208, 260, 325, 400, 520, 650, 1040, 1300, 2600, 4057, 5200, 8114, 16228, 20285, 32456, 40570, 52741, 64912, 81140, 101425, 105482, 162280, 202850, 210964, 263705, 324560, 405700, 421928, 527410, 811400, 843856, 1054820, 1318525, 1622800, 2109640, 2637050, 4219280, 5274100, 10548200, 21096400]

約数ペア:

[(1, 21096400), (2, 10548200), (4, 5274100), (5, 4219280), (8, 2637050), (10, 2109640), (13, 1622800), (16, 1318525), (20, 1054820), (25, 843856), (26, 811400), (40, 527410), (50, 421928), (52, 405700), (65, 324560), (80, 263705), (100, 210964), (104, 202850), (130, 162280), (200, 105482), (208, 101425), (260, 81140), (325, 64912), (400, 52741), (520, 40570), (650, 32456), (1040, 20285), (1300, 16228), (2600, 8114), (4057, 5200)]