21045240

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{1103}}^1$

素因数の和:1173

約数の個数: 96

約数和(自身を含む): 69750720

約数和(自身を除く): 48705480

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, 1103, 1272, 1590, 1908, 2120, 2206, 2385, 3180, 3309, 3816, 4412, 4770, 5515, 6360, 6618, 8824, 9540, 9927, 11030, 13236, 16545, 19080, 19854, 22060, 26472, 33090, 39708, 44120, 49635, 58459, 66180, 79416, 99270, 116918, 132360, 175377, 198540, 233836, 292295, 350754, 397080, 467672, 526131, 584590, 701508, 876885, 1052262, 1169180, 1403016, 1753770, 2104524, 2338360, 2630655, 3507540, 4209048, 5261310, 7015080, 10522620, 21045240]

約数ペア:

[(1, 21045240), (2, 10522620), (3, 7015080), (4, 5261310), (5, 4209048), (6, 3507540), (8, 2630655), (9, 2338360), (10, 2104524), (12, 1753770), (15, 1403016), (18, 1169180), (20, 1052262), (24, 876885), (30, 701508), (36, 584590), (40, 526131), (45, 467672), (53, 397080), (60, 350754), (72, 292295), (90, 233836), (106, 198540), (120, 175377), (159, 132360), (180, 116918), (212, 99270), (265, 79416), (318, 66180), (360, 58459), (424, 49635), (477, 44120), (530, 39708), (636, 33090), (795, 26472), (954, 22060), (1060, 19854), (1103, 19080), (1272, 16545), (1590, 13236), (1908, 11030), (2120, 9927), (2206, 9540), (2385, 8824), (3180, 6618), (3309, 6360), (3816, 5515), (4412, 4770)]