28105275

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{163}}^1$

素因数の和:217

約数の個数: 72

約数和(自身を含む): 54093760

約数和(自身を除く): 25988485

約数列:

[1, 3, 5, 11, 15, 19, 25, 33, 55, 57, 75, 95, 121, 163, 165, 209, 275, 285, 363, 475, 489, 605, 627, 815, 825, 1045, 1425, 1793, 1815, 2299, 2445, 3025, 3097, 3135, 4075, 5225, 5379, 6897, 8965, 9075, 9291, 11495, 12225, 15485, 15675, 19723, 26895, 34067, 34485, 44825, 46455, 57475, 59169, 77425, 98615, 102201, 134475, 170335, 172425, 232275, 295845, 374737, 493075, 511005, 851675, 1124211, 1479225, 1873685, 2555025, 5621055, 9368425, 28105275]

約数ペア:

[(1, 28105275), (3, 9368425), (5, 5621055), (11, 2555025), (15, 1873685), (19, 1479225), (25, 1124211), (33, 851675), (55, 511005), (57, 493075), (75, 374737), (95, 295845), (121, 232275), (163, 172425), (165, 170335), (209, 134475), (275, 102201), (285, 98615), (363, 77425), (475, 59169), (489, 57475), (605, 46455), (627, 44825), (815, 34485), (825, 34067), (1045, 26895), (1425, 19723), (1793, 15675), (1815, 15485), (2299, 12225), (2445, 11495), (3025, 9291), (3097, 9075), (3135, 8965), (4075, 6897), (5225, 5379)]