21212240

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{37879}}^1$

素因数の和:37899

約数の個数: 40

約数和(自身を含む): 56365440

約数和(自身を除く): 35153200

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 37879, 75758, 151516, 189395, 265153, 303032, 378790, 530306, 606064, 757580, 1060612, 1325765, 1515160, 2121224, 2651530, 3030320, 4242448, 5303060, 10606120, 21212240]

約数ペア:

[(1, 21212240), (2, 10606120), (4, 5303060), (5, 4242448), (7, 3030320), (8, 2651530), (10, 2121224), (14, 1515160), (16, 1325765), (20, 1060612), (28, 757580), (35, 606064), (40, 530306), (56, 378790), (70, 303032), (80, 265153), (112, 189395), (140, 151516), (280, 75758), (560, 37879)]