21302450

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^2\times {\mathrm{2521}}^1$

素因数の和:2559

約数の個数: 36

約数和(自身を含む): 42921918

約数和(自身を除く): 21619468

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 130, 169, 325, 338, 650, 845, 1690, 2521, 4225, 5042, 8450, 12605, 25210, 32773, 63025, 65546, 126050, 163865, 327730, 426049, 819325, 852098, 1638650, 2130245, 4260490, 10651225, 21302450]

約数ペア:

[(1, 21302450), (2, 10651225), (5, 4260490), (10, 2130245), (13, 1638650), (25, 852098), (26, 819325), (50, 426049), (65, 327730), (130, 163865), (169, 126050), (325, 65546), (338, 63025), (650, 32773), (845, 25210), (1690, 12605), (2521, 8450), (4225, 5042)]