20554875

素因数分解:

$3^2\times 5^3\times {\mathrm{11}}^2\times {\mathrm{151}}^1$

素因数の和:194

約数の個数: 72

約数和(自身を含む): 40998048

約数和(自身を除く): 20443173

約数列:

[1, 3, 5, 9, 11, 15, 25, 33, 45, 55, 75, 99, 121, 125, 151, 165, 225, 275, 363, 375, 453, 495, 605, 755, 825, 1089, 1125, 1359, 1375, 1661, 1815, 2265, 2475, 3025, 3775, 4125, 4983, 5445, 6795, 8305, 9075, 11325, 12375, 14949, 15125, 18271, 18875, 24915, 27225, 33975, 41525, 45375, 54813, 56625, 74745, 91355, 124575, 136125, 164439, 169875, 207625, 274065, 373725, 456775, 622875, 822195, 1370325, 1868625, 2283875, 4110975, 6851625, 20554875]

約数ペア:

[(1, 20554875), (3, 6851625), (5, 4110975), (9, 2283875), (11, 1868625), (15, 1370325), (25, 822195), (33, 622875), (45, 456775), (55, 373725), (75, 274065), (99, 207625), (121, 169875), (125, 164439), (151, 136125), (165, 124575), (225, 91355), (275, 74745), (363, 56625), (375, 54813), (453, 45375), (495, 41525), (605, 33975), (755, 27225), (825, 24915), (1089, 18875), (1125, 18271), (1359, 15125), (1375, 14949), (1661, 12375), (1815, 11325), (2265, 9075), (2475, 8305), (3025, 6795), (3775, 5445), (4125, 4983)]