80606020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{2459}}^1$

素因数の和:2628

約数の個数: 48

約数和(自身を含む): 185976000

約数和(自身を除く): 105369980

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 149, 220, 298, 596, 745, 1490, 1639, 2459, 2980, 3278, 4918, 6556, 8195, 9836, 12295, 16390, 24590, 27049, 32780, 49180, 54098, 108196, 135245, 270490, 366391, 540980, 732782, 1465564, 1831955, 3663910, 4030301, 7327820, 8060602, 16121204, 20151505, 40303010, 80606020]

約数ペア:

[(1, 80606020), (2, 40303010), (4, 20151505), (5, 16121204), (10, 8060602), (11, 7327820), (20, 4030301), (22, 3663910), (44, 1831955), (55, 1465564), (110, 732782), (149, 540980), (220, 366391), (298, 270490), (596, 135245), (745, 108196), (1490, 54098), (1639, 49180), (2459, 32780), (2980, 27049), (3278, 24590), (4918, 16390), (6556, 12295), (8195, 9836)]