20825860

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{181}}^1\times {\mathrm{523}}^1$

素因数の和:724

約数の個数: 48

約数和(自身を含む): 48065472

約数和(自身を除く): 27239612

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 181, 220, 362, 523, 724, 905, 1046, 1810, 1991, 2092, 2615, 3620, 3982, 5230, 5753, 7964, 9955, 10460, 11506, 19910, 23012, 28765, 39820, 57530, 94663, 115060, 189326, 378652, 473315, 946630, 1041293, 1893260, 2082586, 4165172, 5206465, 10412930, 20825860]

約数ペア:

[(1, 20825860), (2, 10412930), (4, 5206465), (5, 4165172), (10, 2082586), (11, 1893260), (20, 1041293), (22, 946630), (44, 473315), (55, 378652), (110, 189326), (181, 115060), (220, 94663), (362, 57530), (523, 39820), (724, 28765), (905, 23012), (1046, 19910), (1810, 11506), (1991, 10460), (2092, 9955), (2615, 7964), (3620, 5753), (3982, 5230)]