20299475

素因数分解:

$5^2\times 7^2\times {\mathrm{73}}^1\times {\mathrm{227}}^1$

素因数の和:324

約数の個数: 36

約数和(自身を含む): 29812824

約数和(自身を除く): 9513349

約数列:

[1, 5, 7, 25, 35, 49, 73, 175, 227, 245, 365, 511, 1135, 1225, 1589, 1825, 2555, 3577, 5675, 7945, 11123, 12775, 16571, 17885, 39725, 55615, 82855, 89425, 115997, 278075, 414275, 579985, 811979, 2899925, 4059895, 20299475]

約数ペア:

[(1, 20299475), (5, 4059895), (7, 2899925), (25, 811979), (35, 579985), (49, 414275), (73, 278075), (175, 115997), (227, 89425), (245, 82855), (365, 55615), (511, 39725), (1135, 17885), (1225, 16571), (1589, 12775), (1825, 11123), (2555, 7945), (3577, 5675)]