21090788

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{2153}}^1$

素因数の和:2267

約数の個数: 24

約数和(自身を含む): 38599680

約数和(自身を除く): 17508892

約数列:

[1, 2, 4, 31, 62, 79, 124, 158, 316, 2153, 2449, 4306, 4898, 8612, 9796, 66743, 133486, 170087, 266972, 340174, 680348, 5272697, 10545394, 21090788]

約数ペア:

[(1, 21090788), (2, 10545394), (4, 5272697), (31, 680348), (62, 340174), (79, 266972), (124, 170087), (158, 133486), (316, 66743), (2153, 9796), (2449, 8612), (4306, 4898)]