1638650

素因数分解:

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

素因数の和:2546

約数の個数: 24

約数和(自身を含む): 3283644

約数和(自身を除く): 1644994

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 130, 325, 650, 2521, 5042, 12605, 25210, 32773, 63025, 65546, 126050, 163865, 327730, 819325, 1638650]

約数ペア:

[(1, 1638650), (2, 819325), (5, 327730), (10, 163865), (13, 126050), (25, 65546), (26, 63025), (50, 32773), (65, 25210), (130, 12605), (325, 5042), (650, 2521)]