20262675

素因数分解:

$3^1\times 5^2\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{103}}^1$

素因数の和:220

約数の個数: 48

約数和(自身を含む): 35180288

約数和(自身を除く): 14917613

約数列:

[1, 3, 5, 15, 25, 43, 61, 75, 103, 129, 183, 215, 305, 309, 515, 645, 915, 1075, 1525, 1545, 2575, 2623, 3225, 4429, 4575, 6283, 7725, 7869, 13115, 13287, 18849, 22145, 31415, 39345, 65575, 66435, 94245, 110725, 157075, 196725, 270169, 332175, 471225, 810507, 1350845, 4052535, 6754225, 20262675]

約数ペア:

[(1, 20262675), (3, 6754225), (5, 4052535), (15, 1350845), (25, 810507), (43, 471225), (61, 332175), (75, 270169), (103, 196725), (129, 157075), (183, 110725), (215, 94245), (305, 66435), (309, 65575), (515, 39345), (645, 31415), (915, 22145), (1075, 18849), (1525, 13287), (1545, 13115), (2575, 7869), (2623, 7725), (3225, 6283), (4429, 4575)]