28744725

素因数分解:

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

素因数の和:238

約数の個数: 36

約数和(自身を含む): 48785568

約数和(自身を除く): 20040843

約数列:

[1, 3, 5, 15, 25, 61, 75, 103, 183, 305, 309, 515, 915, 1525, 1545, 2575, 3721, 4575, 6283, 7725, 11163, 18605, 18849, 31415, 55815, 93025, 94245, 157075, 279075, 383263, 471225, 1149789, 1916315, 5748945, 9581575, 28744725]

約数ペア:

[(1, 28744725), (3, 9581575), (5, 5748945), (15, 1916315), (25, 1149789), (61, 471225), (75, 383263), (103, 279075), (183, 157075), (305, 94245), (309, 93025), (515, 55815), (915, 31415), (1525, 18849), (1545, 18605), (2575, 11163), (3721, 7725), (4575, 6283)]