21298544

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{70061}}^1$

素因数の和:70088

約数の個数: 20

約数和(自身を含む): 43438440

約数和(自身を除く): 22139896

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 70061, 140122, 280244, 560488, 1120976, 1331159, 2662318, 5324636, 10649272, 21298544]

約数ペア:

[(1, 21298544), (2, 10649272), (4, 5324636), (8, 2662318), (16, 1331159), (19, 1120976), (38, 560488), (76, 280244), (152, 140122), (304, 70061)]