42490825

素因数分解:

$5^2\times {\mathrm{13}}^2\times {\mathrm{89}}^1\times {\mathrm{113}}^1$

素因数の和:238

約数の個数: 36

約数和(自身を含む): 58204980

約数和(自身を除く): 15714155

約数列:

[1, 5, 13, 25, 65, 89, 113, 169, 325, 445, 565, 845, 1157, 1469, 2225, 2825, 4225, 5785, 7345, 10057, 15041, 19097, 28925, 36725, 50285, 75205, 95485, 130741, 251425, 376025, 477425, 653705, 1699633, 3268525, 8498165, 42490825]

約数ペア:

[(1, 42490825), (5, 8498165), (13, 3268525), (25, 1699633), (65, 653705), (89, 477425), (113, 376025), (169, 251425), (325, 130741), (445, 95485), (565, 75205), (845, 50285), (1157, 36725), (1469, 28925), (2225, 19097), (2825, 15041), (4225, 10057), (5785, 7345)]