21608790

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{2393}}^1$

素因数の和:2453

約数の個数: 64

約数和(自身を含む): 60673536

約数和(自身を除く): 39064746

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 43, 70, 86, 105, 129, 210, 215, 258, 301, 430, 602, 645, 903, 1290, 1505, 1806, 2393, 3010, 4515, 4786, 7179, 9030, 11965, 14358, 16751, 23930, 33502, 35895, 50253, 71790, 83755, 100506, 102899, 167510, 205798, 251265, 308697, 502530, 514495, 617394, 720293, 1028990, 1440586, 1543485, 2160879, 3086970, 3601465, 4321758, 7202930, 10804395, 21608790]

約数ペア:

[(1, 21608790), (2, 10804395), (3, 7202930), (5, 4321758), (6, 3601465), (7, 3086970), (10, 2160879), (14, 1543485), (15, 1440586), (21, 1028990), (30, 720293), (35, 617394), (42, 514495), (43, 502530), (70, 308697), (86, 251265), (105, 205798), (129, 167510), (210, 102899), (215, 100506), (258, 83755), (301, 71790), (430, 50253), (602, 35895), (645, 33502), (903, 23930), (1290, 16751), (1505, 14358), (1806, 11965), (2393, 9030), (3010, 7179), (4515, 4786)]