20438131

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{59}}^1\times {\mathrm{71}}^1$

素因数の和:195

約数の個数: 32

約数和(自身を含む): 26127360

約数和(自身を除く): 5689229

約数列:

[1, 7, 17, 41, 59, 71, 119, 287, 413, 497, 697, 1003, 1207, 2419, 2911, 4189, 4879, 7021, 8449, 16933, 20377, 29323, 41123, 49487, 71213, 171749, 287861, 346409, 498491, 1202243, 2919733, 20438131]

約数ペア:

[(1, 20438131), (7, 2919733), (17, 1202243), (41, 498491), (59, 346409), (71, 287861), (119, 171749), (287, 71213), (413, 49487), (497, 41123), (697, 29323), (1003, 20377), (1207, 16933), (2419, 8449), (2911, 7021), (4189, 4879)]