20784530

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{2621}}^1$

素因数の和:2702

約数の個数: 32

約数和(自身を含む): 40966128

約数和(自身を除く): 20181598

約数列:

[1, 2, 5, 10, 13, 26, 61, 65, 122, 130, 305, 610, 793, 1586, 2621, 3965, 5242, 7930, 13105, 26210, 34073, 68146, 159881, 170365, 319762, 340730, 799405, 1598810, 2078453, 4156906, 10392265, 20784530]

約数ペア:

[(1, 20784530), (2, 10392265), (5, 4156906), (10, 2078453), (13, 1598810), (26, 799405), (61, 340730), (65, 319762), (122, 170365), (130, 159881), (305, 68146), (610, 34073), (793, 26210), (1586, 13105), (2621, 7930), (3965, 5242)]