20002689080

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{367}}^1\times {\mathrm{11261}}^1$

素因数の和:11661

約数の個数: 96

約数和(自身を含む): 49608659520

約数和(自身を除く): 29605970440

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 121, 220, 242, 367, 440, 484, 605, 734, 968, 1210, 1468, 1835, 2420, 2936, 3670, 4037, 4840, 7340, 8074, 11261, 14680, 16148, 20185, 22522, 32296, 40370, 44407, 45044, 56305, 80740, 88814, 90088, 112610, 123871, 161480, 177628, 222035, 225220, 247742, 355256, 444070, 450440, 495484, 619355, 888140, 990968, 1238710, 1362581, 1776280, 2477420, 2725162, 4132787, 4954840, 5450324, 6812905, 8265574, 10900648, 13625810, 16531148, 20663935, 27251620, 33062296, 41327870, 45460657, 54503240, 82655740, 90921314, 165311480, 181842628, 227303285, 363685256, 454606570, 500067227, 909213140, 1000134454, 1818426280, 2000268908, 2500336135, 4000537816, 5000672270, 10001344540, 20002689080]

約数ペア:

[(1, 20002689080), (2, 10001344540), (4, 5000672270), (5, 4000537816), (8, 2500336135), (10, 2000268908), (11, 1818426280), (20, 1000134454), (22, 909213140), (40, 500067227), (44, 454606570), (55, 363685256), (88, 227303285), (110, 181842628), (121, 165311480), (220, 90921314), (242, 82655740), (367, 54503240), (440, 45460657), (484, 41327870), (605, 33062296), (734, 27251620), (968, 20663935), (1210, 16531148), (1468, 13625810), (1835, 10900648), (2420, 8265574), (2936, 6812905), (3670, 5450324), (4037, 4954840), (4840, 4132787), (7340, 2725162), (8074, 2477420), (11261, 1776280), (14680, 1362581), (16148, 1238710), (20185, 990968), (22522, 888140), (32296, 619355), (40370, 495484), (44407, 450440), (45044, 444070), (56305, 355256), (80740, 247742), (88814, 225220), (90088, 222035), (112610, 177628), (123871, 161480)]