21244580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{3529}}^1$

素因数の和:3588

約数の個数: 48

約数和(自身を含む): 52187520

約数和(自身を除く): 30942940

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 43, 70, 86, 140, 172, 215, 301, 430, 602, 860, 1204, 1505, 3010, 3529, 6020, 7058, 14116, 17645, 24703, 35290, 49406, 70580, 98812, 123515, 151747, 247030, 303494, 494060, 606988, 758735, 1062229, 1517470, 2124458, 3034940, 4248916, 5311145, 10622290, 21244580]

約数ペア:

[(1, 21244580), (2, 10622290), (4, 5311145), (5, 4248916), (7, 3034940), (10, 2124458), (14, 1517470), (20, 1062229), (28, 758735), (35, 606988), (43, 494060), (70, 303494), (86, 247030), (140, 151747), (172, 123515), (215, 98812), (301, 70580), (430, 49406), (602, 35290), (860, 24703), (1204, 17645), (1505, 14116), (3010, 7058), (3529, 6020)]