21500900

素因数分解:

$2^2\times 5^2\times {\mathrm{211}}^1\times {\mathrm{1019}}^1$

素因数の和:1244

約数の個数: 36

約数和(自身を含む): 46924080

約数和(自身を除く): 25423180

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 211, 422, 844, 1019, 1055, 2038, 2110, 4076, 4220, 5095, 5275, 10190, 10550, 20380, 21100, 25475, 50950, 101900, 215009, 430018, 860036, 1075045, 2150090, 4300180, 5375225, 10750450, 21500900]

約数ペア:

[(1, 21500900), (2, 10750450), (4, 5375225), (5, 4300180), (10, 2150090), (20, 1075045), (25, 860036), (50, 430018), (100, 215009), (211, 101900), (422, 50950), (844, 25475), (1019, 21100), (1055, 20380), (2038, 10550), (2110, 10190), (4076, 5275), (4220, 5095)]