20316478

素因数分解:

$2^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{431}}^1$

素因数の和:497

約数の個数: 48

約数和(自身を含む): 39299904

約数和(自身を除く): 18983426

約数列:

[1, 2, 7, 13, 14, 26, 37, 49, 74, 91, 98, 182, 259, 431, 481, 518, 637, 862, 962, 1274, 1813, 3017, 3367, 3626, 5603, 6034, 6734, 11206, 15947, 21119, 23569, 31894, 39221, 42238, 47138, 78442, 111629, 207311, 223258, 274547, 414622, 549094, 781403, 1451177, 1562806, 2902354, 10158239, 20316478]

約数ペア:

[(1, 20316478), (2, 10158239), (7, 2902354), (13, 1562806), (14, 1451177), (26, 781403), (37, 549094), (49, 414622), (74, 274547), (91, 223258), (98, 207311), (182, 111629), (259, 78442), (431, 47138), (481, 42238), (518, 39221), (637, 31894), (862, 23569), (962, 21119), (1274, 15947), (1813, 11206), (3017, 6734), (3367, 6034), (3626, 5603)]