21152925

素因数分解:

$3^2\times 5^2\times {\mathrm{41}}^1\times {\mathrm{2293}}^1$

素因数の和:2350

約数の個数: 36

約数和(自身を含む): 38828244

約数和(自身を除く): 17675319

約数列:

[1, 3, 5, 9, 15, 25, 41, 45, 75, 123, 205, 225, 369, 615, 1025, 1845, 2293, 3075, 6879, 9225, 11465, 20637, 34395, 57325, 94013, 103185, 171975, 282039, 470065, 515925, 846117, 1410195, 2350325, 4230585, 7050975, 21152925]

約数ペア:

[(1, 21152925), (3, 7050975), (5, 4230585), (9, 2350325), (15, 1410195), (25, 846117), (41, 515925), (45, 470065), (75, 282039), (123, 171975), (205, 103185), (225, 94013), (369, 57325), (615, 34395), (1025, 20637), (1845, 11465), (2293, 9225), (3075, 6879)]