20778815525

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{83}}^1\times {\mathrm{11497}}^1$

素因数の和:11670

約数の個数: 48

約数和(自身を含む): 28503633984

約数和(自身を除く): 7724818459

約数列:

[1, 5, 13, 25, 65, 67, 83, 325, 335, 415, 871, 1079, 1675, 2075, 4355, 5395, 5561, 11497, 21775, 26975, 27805, 57485, 72293, 139025, 149461, 287425, 361465, 747305, 770299, 954251, 1807325, 3736525, 3851495, 4771255, 10013887, 12405263, 19257475, 23856275, 50069435, 62026315, 63934817, 250347175, 310131575, 319674085, 831152621, 1598370425, 4155763105, 20778815525]

約数ペア:

[(1, 20778815525), (5, 4155763105), (13, 1598370425), (25, 831152621), (65, 319674085), (67, 310131575), (83, 250347175), (325, 63934817), (335, 62026315), (415, 50069435), (871, 23856275), (1079, 19257475), (1675, 12405263), (2075, 10013887), (4355, 4771255), (5395, 3851495), (5561, 3736525), (11497, 1807325), (21775, 954251), (26975, 770299), (27805, 747305), (57485, 361465), (72293, 287425), (139025, 149461)]