21838700

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{157}}^1$

素因数の和:291

約数の個数: 72

約数和(自身を含む): 51840432

約数和(自身を除く): 30001732

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 107, 130, 157, 214, 260, 314, 325, 428, 535, 628, 650, 785, 1070, 1300, 1391, 1570, 2041, 2140, 2675, 2782, 3140, 3925, 4082, 5350, 5564, 6955, 7850, 8164, 10205, 10700, 13910, 15700, 16799, 20410, 27820, 33598, 34775, 40820, 51025, 67196, 69550, 83995, 102050, 139100, 167990, 204100, 218387, 335980, 419975, 436774, 839950, 873548, 1091935, 1679900, 2183870, 4367740, 5459675, 10919350, 21838700]

約数ペア:

[(1, 21838700), (2, 10919350), (4, 5459675), (5, 4367740), (10, 2183870), (13, 1679900), (20, 1091935), (25, 873548), (26, 839950), (50, 436774), (52, 419975), (65, 335980), (100, 218387), (107, 204100), (130, 167990), (157, 139100), (214, 102050), (260, 83995), (314, 69550), (325, 67196), (428, 51025), (535, 40820), (628, 34775), (650, 33598), (785, 27820), (1070, 20410), (1300, 16799), (1391, 15700), (1570, 13910), (2041, 10700), (2140, 10205), (2675, 8164), (2782, 7850), (3140, 6955), (3925, 5564), (4082, 5350)]