71954421

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{251}}^1$

素因数の和:362

約数の個数: 64

約数和(自身を含む): 128894976

約数和(自身を除く): 56940555

約数列:

[1, 3, 7, 11, 17, 21, 33, 51, 73, 77, 119, 187, 219, 231, 251, 357, 511, 561, 753, 803, 1241, 1309, 1533, 1757, 2409, 2761, 3723, 3927, 4267, 5271, 5621, 8283, 8687, 12801, 13651, 16863, 18323, 19327, 26061, 29869, 40953, 46937, 54969, 57981, 89607, 95557, 128261, 140811, 201553, 286671, 311491, 328559, 384783, 604659, 934473, 985677, 1410871, 2180437, 3426401, 4232613, 6541311, 10279203, 23984807, 71954421]

約数ペア:

[(1, 71954421), (3, 23984807), (7, 10279203), (11, 6541311), (17, 4232613), (21, 3426401), (33, 2180437), (51, 1410871), (73, 985677), (77, 934473), (119, 604659), (187, 384783), (219, 328559), (231, 311491), (251, 286671), (357, 201553), (511, 140811), (561, 128261), (753, 95557), (803, 89607), (1241, 57981), (1309, 54969), (1533, 46937), (1757, 40953), (2409, 29869), (2761, 26061), (3723, 19327), (3927, 18323), (4267, 16863), (5271, 13651), (5621, 12801), (8283, 8687)]