21999240

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{1153}}^1$

素因数の和:1223

約数の個数: 96

約数和(自身を含む): 72909720

約数和(自身を除く): 50910480

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 53, 60, 72, 90, 106, 120, 159, 180, 212, 265, 318, 360, 424, 477, 530, 636, 795, 954, 1060, 1153, 1272, 1590, 1908, 2120, 2306, 2385, 3180, 3459, 3816, 4612, 4770, 5765, 6360, 6918, 9224, 9540, 10377, 11530, 13836, 17295, 19080, 20754, 23060, 27672, 34590, 41508, 46120, 51885, 61109, 69180, 83016, 103770, 122218, 138360, 183327, 207540, 244436, 305545, 366654, 415080, 488872, 549981, 611090, 733308, 916635, 1099962, 1222180, 1466616, 1833270, 2199924, 2444360, 2749905, 3666540, 4399848, 5499810, 7333080, 10999620, 21999240]

約数ペア:

[(1, 21999240), (2, 10999620), (3, 7333080), (4, 5499810), (5, 4399848), (6, 3666540), (8, 2749905), (9, 2444360), (10, 2199924), (12, 1833270), (15, 1466616), (18, 1222180), (20, 1099962), (24, 916635), (30, 733308), (36, 611090), (40, 549981), (45, 488872), (53, 415080), (60, 366654), (72, 305545), (90, 244436), (106, 207540), (120, 183327), (159, 138360), (180, 122218), (212, 103770), (265, 83016), (318, 69180), (360, 61109), (424, 51885), (477, 46120), (530, 41508), (636, 34590), (795, 27672), (954, 23060), (1060, 20754), (1153, 19080), (1272, 17295), (1590, 13836), (1908, 11530), (2120, 10377), (2306, 9540), (2385, 9224), (3180, 6918), (3459, 6360), (3816, 5765), (4612, 4770)]