21796515

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1$

素因数の和:133

約数の個数: 96

約数和(自身を含む): 44815680

約数和(自身を除く): 23019165

約数列:

[1, 3, 5, 9, 13, 15, 19, 37, 39, 45, 53, 57, 65, 95, 111, 117, 159, 171, 185, 195, 247, 265, 285, 333, 477, 481, 555, 585, 689, 703, 741, 795, 855, 1007, 1235, 1443, 1665, 1961, 2067, 2109, 2223, 2385, 2405, 3021, 3445, 3515, 3705, 4329, 5035, 5883, 6201, 6327, 7215, 9063, 9139, 9805, 10335, 10545, 11115, 13091, 15105, 17649, 21645, 25493, 27417, 29415, 31005, 31635, 37259, 39273, 45315, 45695, 65455, 76479, 82251, 88245, 111777, 117819, 127465, 137085, 186295, 196365, 229437, 335331, 382395, 411255, 484367, 558885, 589095, 1147185, 1453101, 1676655, 2421835, 4359303, 7265505, 21796515]

約数ペア:

[(1, 21796515), (3, 7265505), (5, 4359303), (9, 2421835), (13, 1676655), (15, 1453101), (19, 1147185), (37, 589095), (39, 558885), (45, 484367), (53, 411255), (57, 382395), (65, 335331), (95, 229437), (111, 196365), (117, 186295), (159, 137085), (171, 127465), (185, 117819), (195, 111777), (247, 88245), (265, 82251), (285, 76479), (333, 65455), (477, 45695), (481, 45315), (555, 39273), (585, 37259), (689, 31635), (703, 31005), (741, 29415), (795, 27417), (855, 25493), (1007, 21645), (1235, 17649), (1443, 15105), (1665, 13091), (1961, 11115), (2067, 10545), (2109, 10335), (2223, 9805), (2385, 9139), (2405, 9063), (3021, 7215), (3445, 6327), (3515, 6201), (3705, 5883), (4329, 5035)]