81987620

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{263}}^1$

素因数の和:405

約数の個数: 96

約数和(自身を含む): 204906240

約数和(自身を除く): 122918620

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 109, 110, 130, 143, 218, 220, 260, 263, 286, 436, 526, 545, 572, 715, 1052, 1090, 1199, 1315, 1417, 1430, 2180, 2398, 2630, 2834, 2860, 2893, 3419, 4796, 5260, 5668, 5786, 5995, 6838, 7085, 11572, 11990, 13676, 14170, 14465, 15587, 17095, 23980, 28340, 28667, 28930, 31174, 34190, 37609, 57334, 57860, 62348, 68380, 75218, 77935, 114668, 143335, 150436, 155870, 188045, 286670, 311740, 315337, 372671, 376090, 573340, 630674, 745342, 752180, 1261348, 1490684, 1576685, 1863355, 3153370, 3726710, 4099381, 6306740, 7453420, 8198762, 16397524, 20496905, 40993810, 81987620]

約数ペア:

[(1, 81987620), (2, 40993810), (4, 20496905), (5, 16397524), (10, 8198762), (11, 7453420), (13, 6306740), (20, 4099381), (22, 3726710), (26, 3153370), (44, 1863355), (52, 1576685), (55, 1490684), (65, 1261348), (109, 752180), (110, 745342), (130, 630674), (143, 573340), (218, 376090), (220, 372671), (260, 315337), (263, 311740), (286, 286670), (436, 188045), (526, 155870), (545, 150436), (572, 143335), (715, 114668), (1052, 77935), (1090, 75218), (1199, 68380), (1315, 62348), (1417, 57860), (1430, 57334), (2180, 37609), (2398, 34190), (2630, 31174), (2834, 28930), (2860, 28667), (2893, 28340), (3419, 23980), (4796, 17095), (5260, 15587), (5668, 14465), (5786, 14170), (5995, 13676), (6838, 11990), (7085, 11572)]