21478574

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{83}}^1\times {\mathrm{269}}^1$

素因数の和:404

約数の個数: 32

約数和(自身を含む): 36197280

約数和(自身を除く): 14718706

約数列:

[1, 2, 13, 26, 37, 74, 83, 166, 269, 481, 538, 962, 1079, 2158, 3071, 3497, 6142, 6994, 9953, 19906, 22327, 39923, 44654, 79846, 129389, 258778, 290251, 580502, 826099, 1652198, 10739287, 21478574]

約数ペア:

[(1, 21478574), (2, 10739287), (13, 1652198), (26, 826099), (37, 580502), (74, 290251), (83, 258778), (166, 129389), (269, 79846), (481, 44654), (538, 39923), (962, 22327), (1079, 19906), (2158, 9953), (3071, 6994), (3497, 6142)]