19744985

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{239}}^1$

素因数の和:329

約数の個数: 32

約数和(自身を含む): 27095040

約数和(自身を除く): 7350055

約数列:

[1, 5, 13, 31, 41, 65, 155, 205, 239, 403, 533, 1195, 1271, 2015, 2665, 3107, 6355, 7409, 9799, 15535, 16523, 37045, 48995, 82615, 96317, 127387, 303769, 481585, 636935, 1518845, 3948997, 19744985]

約数ペア:

[(1, 19744985), (5, 3948997), (13, 1518845), (31, 636935), (41, 481585), (65, 303769), (155, 127387), (205, 96317), (239, 82615), (403, 48995), (533, 37045), (1195, 16523), (1271, 15535), (2015, 9799), (2665, 7409), (3107, 6355)]