20741325

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{811}}^1$

素因数の和:866

約数の個数: 48

約数和(自身を含む): 38664192

約数和(自身を除く): 17922867

約数列:

[1, 3, 5, 11, 15, 25, 31, 33, 55, 75, 93, 155, 165, 275, 341, 465, 775, 811, 825, 1023, 1705, 2325, 2433, 4055, 5115, 8525, 8921, 12165, 20275, 25141, 25575, 26763, 44605, 60825, 75423, 125705, 133815, 223025, 276551, 377115, 628525, 669075, 829653, 1382755, 1885575, 4148265, 6913775, 20741325]

約数ペア:

[(1, 20741325), (3, 6913775), (5, 4148265), (11, 1885575), (15, 1382755), (25, 829653), (31, 669075), (33, 628525), (55, 377115), (75, 276551), (93, 223025), (155, 133815), (165, 125705), (275, 75423), (341, 60825), (465, 44605), (775, 26763), (811, 25575), (825, 25141), (1023, 20275), (1705, 12165), (2325, 8921), (2433, 8525), (4055, 5115)]