20532561

素因数分解:

$3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{293}}^1$

素因数の和:421

約数の個数: 32

約数和(自身を含む): 32514048

約数和(自身を除く): 11981487

約数列:

[1, 3, 7, 21, 47, 71, 141, 213, 293, 329, 497, 879, 987, 1491, 2051, 3337, 6153, 10011, 13771, 20803, 23359, 41313, 62409, 70077, 96397, 145621, 289191, 436863, 977741, 2933223, 6844187, 20532561]

約数ペア:

[(1, 20532561), (3, 6844187), (7, 2933223), (21, 977741), (47, 436863), (71, 289191), (141, 145621), (213, 96397), (293, 70077), (329, 62409), (497, 41313), (879, 23359), (987, 20803), (1491, 13771), (2051, 10011), (3337, 6153)]