21705502

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{239}}^1\times {\mathrm{499}}^1$

素因数の和:760

約数の個数: 32

約数和(自身を含む): 40320000

約数和(自身を除く): 18614498

約数列:

[1, 2, 7, 13, 14, 26, 91, 182, 239, 478, 499, 998, 1673, 3107, 3346, 3493, 6214, 6487, 6986, 12974, 21749, 43498, 45409, 90818, 119261, 238522, 834827, 1550393, 1669654, 3100786, 10852751, 21705502]

約数ペア:

[(1, 21705502), (2, 10852751), (7, 3100786), (13, 1669654), (14, 1550393), (26, 834827), (91, 238522), (182, 119261), (239, 90818), (478, 45409), (499, 43498), (998, 21749), (1673, 12974), (3107, 6986), (3346, 6487), (3493, 6214)]