20278900

素因数分解:

$2^2\times 5^2\times {\mathrm{149}}^1\times {\mathrm{1361}}^1$

素因数の和:1524

約数の個数: 36

約数和(自身を含む): 44333100

約数和(自身を除く): 24054200

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 149, 298, 596, 745, 1361, 1490, 2722, 2980, 3725, 5444, 6805, 7450, 13610, 14900, 27220, 34025, 68050, 136100, 202789, 405578, 811156, 1013945, 2027890, 4055780, 5069725, 10139450, 20278900]

約数ペア:

[(1, 20278900), (2, 10139450), (4, 5069725), (5, 4055780), (10, 2027890), (20, 1013945), (25, 811156), (50, 405578), (100, 202789), (149, 136100), (298, 68050), (596, 34025), (745, 27220), (1361, 14900), (1490, 13610), (2722, 7450), (2980, 6805), (3725, 5444)]