20591896

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{613}}^1$

素因数の和:668

約数の個数: 64

約数和(自身を含む): 46418400

約数和(自身を除く): 25826504

約数列:

[1, 2, 4, 8, 13, 17, 19, 26, 34, 38, 52, 68, 76, 104, 136, 152, 221, 247, 323, 442, 494, 613, 646, 884, 988, 1226, 1292, 1768, 1976, 2452, 2584, 4199, 4904, 7969, 8398, 10421, 11647, 15938, 16796, 20842, 23294, 31876, 33592, 41684, 46588, 63752, 83368, 93176, 135473, 151411, 197999, 270946, 302822, 395998, 541892, 605644, 791996, 1083784, 1211288, 1583992, 2573987, 5147974, 10295948, 20591896]

約数ペア:

[(1, 20591896), (2, 10295948), (4, 5147974), (8, 2573987), (13, 1583992), (17, 1211288), (19, 1083784), (26, 791996), (34, 605644), (38, 541892), (52, 395998), (68, 302822), (76, 270946), (104, 197999), (136, 151411), (152, 135473), (221, 93176), (247, 83368), (323, 63752), (442, 46588), (494, 41684), (613, 33592), (646, 31876), (884, 23294), (988, 20842), (1226, 16796), (1292, 15938), (1768, 11647), (1976, 10421), (2452, 8398), (2584, 7969), (4199, 4904)]