31645978

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1$

素因数の和:203

約数の個数: 64

約数和(自身を含む): 61931520

約数和(自身を除く): 30285542

約数列:

[1, 2, 7, 13, 14, 26, 31, 62, 71, 79, 91, 142, 158, 182, 217, 403, 434, 497, 553, 806, 923, 994, 1027, 1106, 1846, 2054, 2201, 2449, 2821, 4402, 4898, 5609, 5642, 6461, 7189, 11218, 12922, 14378, 15407, 17143, 28613, 30814, 31837, 34286, 39263, 57226, 63674, 72917, 78526, 145834, 173879, 200291, 222859, 347758, 400582, 445718, 510419, 1020838, 1217153, 2260427, 2434306, 4520854, 15822989, 31645978]

約数ペア:

[(1, 31645978), (2, 15822989), (7, 4520854), (13, 2434306), (14, 2260427), (26, 1217153), (31, 1020838), (62, 510419), (71, 445718), (79, 400582), (91, 347758), (142, 222859), (158, 200291), (182, 173879), (217, 145834), (403, 78526), (434, 72917), (497, 63674), (553, 57226), (806, 39263), (923, 34286), (994, 31837), (1027, 30814), (1106, 28613), (1846, 17143), (2054, 15407), (2201, 14378), (2449, 12922), (2821, 11218), (4402, 7189), (4898, 6461), (5609, 5642)]