15980041

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1$

素因数の和:205

約数の個数: 32

約数和(自身を含む): 21012480

約数和(自身を除く): 5032439

約数列:

[1, 7, 11, 37, 71, 77, 79, 259, 407, 497, 553, 781, 869, 2627, 2849, 2923, 5467, 5609, 6083, 18389, 20461, 28897, 32153, 39263, 61699, 202279, 207533, 225071, 431893, 1452731, 2282863, 15980041]

約数ペア:

[(1, 15980041), (7, 2282863), (11, 1452731), (37, 431893), (71, 225071), (77, 207533), (79, 202279), (259, 61699), (407, 39263), (497, 32153), (553, 28897), (781, 20461), (869, 18389), (2627, 6083), (2849, 5609), (2923, 5467)]