18405135

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{491}}^1$

素因数の和:533

約数の個数: 72

約数和(自身を含む): 39373776

約数和(自身を除く): 20968641

約数列:

[1, 3, 5, 7, 9, 15, 17, 21, 35, 45, 49, 51, 63, 85, 105, 119, 147, 153, 245, 255, 315, 357, 441, 491, 595, 735, 765, 833, 1071, 1473, 1785, 2205, 2455, 2499, 3437, 4165, 4419, 5355, 7365, 7497, 8347, 10311, 12495, 17185, 22095, 24059, 25041, 30933, 37485, 41735, 51555, 58429, 72177, 75123, 120295, 125205, 154665, 175287, 216531, 292145, 360885, 375615, 409003, 525861, 876435, 1082655, 1227009, 2045015, 2629305, 3681027, 6135045, 18405135]

約数ペア:

[(1, 18405135), (3, 6135045), (5, 3681027), (7, 2629305), (9, 2045015), (15, 1227009), (17, 1082655), (21, 876435), (35, 525861), (45, 409003), (49, 375615), (51, 360885), (63, 292145), (85, 216531), (105, 175287), (119, 154665), (147, 125205), (153, 120295), (245, 75123), (255, 72177), (315, 58429), (357, 51555), (441, 41735), (491, 37485), (595, 30933), (735, 25041), (765, 24059), (833, 22095), (1071, 17185), (1473, 12495), (1785, 10311), (2205, 8347), (2455, 7497), (2499, 7365), (3437, 5355), (4165, 4419)]