21359820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{487}}^1$

素因数の和:559

約数の個数: 96

約数和(自身を含む): 64931328

約数和(自身を除く): 43571508

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 43, 51, 60, 68, 85, 86, 102, 129, 170, 172, 204, 215, 255, 258, 340, 430, 487, 510, 516, 645, 731, 860, 974, 1020, 1290, 1461, 1462, 1948, 2193, 2435, 2580, 2922, 2924, 3655, 4386, 4870, 5844, 7305, 7310, 8279, 8772, 9740, 10965, 14610, 14620, 16558, 20941, 21930, 24837, 29220, 33116, 41395, 41882, 43860, 49674, 62823, 82790, 83764, 99348, 104705, 124185, 125646, 165580, 209410, 248370, 251292, 314115, 355997, 418820, 496740, 628230, 711994, 1067991, 1256460, 1423988, 1779985, 2135982, 3559970, 4271964, 5339955, 7119940, 10679910, 21359820]

約数ペア:

[(1, 21359820), (2, 10679910), (3, 7119940), (4, 5339955), (5, 4271964), (6, 3559970), (10, 2135982), (12, 1779985), (15, 1423988), (17, 1256460), (20, 1067991), (30, 711994), (34, 628230), (43, 496740), (51, 418820), (60, 355997), (68, 314115), (85, 251292), (86, 248370), (102, 209410), (129, 165580), (170, 125646), (172, 124185), (204, 104705), (215, 99348), (255, 83764), (258, 82790), (340, 62823), (430, 49674), (487, 43860), (510, 41882), (516, 41395), (645, 33116), (731, 29220), (860, 24837), (974, 21930), (1020, 20941), (1290, 16558), (1461, 14620), (1462, 14610), (1948, 10965), (2193, 9740), (2435, 8772), (2580, 8279), (2922, 7310), (2924, 7305), (3655, 5844), (4386, 4870)]