21676005

素因数分解:

$3^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{179}}^1$

素因数の和:232

約数の個数: 80

約数和(自身を含む): 43908480

約数和(自身を除く): 22232475

約数列:

[1, 3, 5, 9, 13, 15, 23, 27, 39, 45, 65, 69, 81, 115, 117, 135, 179, 195, 207, 299, 345, 351, 405, 537, 585, 621, 895, 897, 1035, 1053, 1495, 1611, 1755, 1863, 2327, 2685, 2691, 3105, 4117, 4485, 4833, 5265, 6981, 8055, 8073, 9315, 11635, 12351, 13455, 14499, 20585, 20943, 24165, 24219, 34905, 37053, 40365, 53521, 61755, 62829, 72495, 104715, 111159, 121095, 160563, 185265, 188487, 267605, 314145, 333477, 481689, 555795, 802815, 942435, 1445067, 1667385, 2408445, 4335201, 7225335, 21676005]

約数ペア:

[(1, 21676005), (3, 7225335), (5, 4335201), (9, 2408445), (13, 1667385), (15, 1445067), (23, 942435), (27, 802815), (39, 555795), (45, 481689), (65, 333477), (69, 314145), (81, 267605), (115, 188487), (117, 185265), (135, 160563), (179, 121095), (195, 111159), (207, 104715), (299, 72495), (345, 62829), (351, 61755), (405, 53521), (537, 40365), (585, 37053), (621, 34905), (895, 24219), (897, 24165), (1035, 20943), (1053, 20585), (1495, 14499), (1611, 13455), (1755, 12351), (1863, 11635), (2327, 9315), (2685, 8073), (2691, 8055), (3105, 6981), (4117, 5265), (4485, 4833)]