20121045

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{2699}}^1$

素因数の和:2785

約数の個数: 32

約数和(自身を含む): 37324800

約数和(自身を除く): 17203755

約数列:

[1, 3, 5, 7, 15, 21, 35, 71, 105, 213, 355, 497, 1065, 1491, 2485, 2699, 7455, 8097, 13495, 18893, 40485, 56679, 94465, 191629, 283395, 574887, 958145, 1341403, 2874435, 4024209, 6707015, 20121045]

約数ペア:

[(1, 20121045), (3, 6707015), (5, 4024209), (7, 2874435), (15, 1341403), (21, 958145), (35, 574887), (71, 283395), (105, 191629), (213, 94465), (355, 56679), (497, 40485), (1065, 18893), (1491, 13495), (2485, 8097), (2699, 7455)]