72120105

素因数分解:

$3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{907}}^1$

素因数の和:971

約数の個数: 64

約数和(自身を含む): 139468800

約数和(自身を除く): 67348695

約数列:

[1, 3, 5, 9, 15, 19, 27, 31, 45, 57, 93, 95, 135, 155, 171, 279, 285, 465, 513, 589, 837, 855, 907, 1395, 1767, 2565, 2721, 2945, 4185, 4535, 5301, 8163, 8835, 13605, 15903, 17233, 24489, 26505, 28117, 40815, 51699, 79515, 84351, 86165, 122445, 140585, 155097, 253053, 258495, 421755, 465291, 534223, 759159, 775485, 1265265, 1602669, 2326455, 2671115, 3795795, 4808007, 8013345, 14424021, 24040035, 72120105]

約数ペア:

[(1, 72120105), (3, 24040035), (5, 14424021), (9, 8013345), (15, 4808007), (19, 3795795), (27, 2671115), (31, 2326455), (45, 1602669), (57, 1265265), (93, 775485), (95, 759159), (135, 534223), (155, 465291), (171, 421755), (279, 258495), (285, 253053), (465, 155097), (513, 140585), (589, 122445), (837, 86165), (855, 84351), (907, 79515), (1395, 51699), (1767, 40815), (2565, 28117), (2721, 26505), (2945, 24489), (4185, 17233), (4535, 15903), (5301, 13605), (8163, 8835)]