20462420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{281}}^1\times {\mathrm{331}}^1$

素因数の和:632

約数の個数: 48

約数和(自身を含む): 47186496

約数和(自身を除く): 26724076

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 281, 331, 562, 662, 1124, 1324, 1405, 1655, 2810, 3091, 3310, 3641, 5620, 6182, 6620, 7282, 12364, 14564, 15455, 18205, 30910, 36410, 61820, 72820, 93011, 186022, 372044, 465055, 930110, 1023121, 1860220, 2046242, 4092484, 5115605, 10231210, 20462420]

約数ペア:

[(1, 20462420), (2, 10231210), (4, 5115605), (5, 4092484), (10, 2046242), (11, 1860220), (20, 1023121), (22, 930110), (44, 465055), (55, 372044), (110, 186022), (220, 93011), (281, 72820), (331, 61820), (562, 36410), (662, 30910), (1124, 18205), (1324, 15455), (1405, 14564), (1655, 12364), (2810, 7282), (3091, 6620), (3310, 6182), (3641, 5620)]