20894825

素因数分解:

$5^2\times 7^2\times {\mathrm{37}}^1\times {\mathrm{461}}^1$

素因数の和:522

約数の個数: 36

約数和(自身を含む): 31021452

約数和(自身を除く): 10126627

約数列:

[1, 5, 7, 25, 35, 37, 49, 175, 185, 245, 259, 461, 925, 1225, 1295, 1813, 2305, 3227, 6475, 9065, 11525, 16135, 17057, 22589, 45325, 80675, 85285, 112945, 119399, 426425, 564725, 596995, 835793, 2984975, 4178965, 20894825]

約数ペア:

[(1, 20894825), (5, 4178965), (7, 2984975), (25, 835793), (35, 596995), (37, 564725), (49, 426425), (175, 119399), (185, 112945), (245, 85285), (259, 80675), (461, 45325), (925, 22589), (1225, 17057), (1295, 16135), (1813, 11525), (2305, 9065), (3227, 6475)]