90576020

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{181}}^1\times {\mathrm{191}}^1$

素因数の和:512

約数の個数: 48

約数和(自身を含む): 193729536

約数和(自身を除く): 103153516

約数列:

[1, 2, 4, 5, 10, 20, 131, 181, 191, 262, 362, 382, 524, 655, 724, 764, 905, 955, 1310, 1810, 1910, 2620, 3620, 3820, 23711, 25021, 34571, 47422, 50042, 69142, 94844, 100084, 118555, 125105, 138284, 172855, 237110, 250210, 345710, 474220, 500420, 691420, 4528801, 9057602, 18115204, 22644005, 45288010, 90576020]

約数ペア:

[(1, 90576020), (2, 45288010), (4, 22644005), (5, 18115204), (10, 9057602), (20, 4528801), (131, 691420), (181, 500420), (191, 474220), (262, 345710), (362, 250210), (382, 237110), (524, 172855), (655, 138284), (724, 125105), (764, 118555), (905, 100084), (955, 94844), (1310, 69142), (1810, 50042), (1910, 47422), (2620, 34571), (3620, 25021), (3820, 23711)]