21366020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{2221}}^1$

素因数の和:2280

約数の個数: 48

約数和(自身を含む): 49648368

約数和(自身を除く): 28282348

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 37, 52, 65, 74, 130, 148, 185, 260, 370, 481, 740, 962, 1924, 2221, 2405, 4442, 4810, 8884, 9620, 11105, 22210, 28873, 44420, 57746, 82177, 115492, 144365, 164354, 288730, 328708, 410885, 577460, 821770, 1068301, 1643540, 2136602, 4273204, 5341505, 10683010, 21366020]

約数ペア:

[(1, 21366020), (2, 10683010), (4, 5341505), (5, 4273204), (10, 2136602), (13, 1643540), (20, 1068301), (26, 821770), (37, 577460), (52, 410885), (65, 328708), (74, 288730), (130, 164354), (148, 144365), (185, 115492), (260, 82177), (370, 57746), (481, 44420), (740, 28873), (962, 22210), (1924, 11105), (2221, 9620), (2405, 8884), (4442, 4810)]