20081031885

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{293}}^1\times {\mathrm{1129}}^1$

素因数の和:1523

約数の個数: 96

約数和(自身を含む): 37314950400

約数和(自身を除く): 17233918515

約数列:

[1, 3, 5, 9, 15, 19, 45, 57, 71, 95, 171, 213, 285, 293, 355, 639, 855, 879, 1065, 1129, 1349, 1465, 2637, 3195, 3387, 4047, 4395, 5567, 5645, 6745, 10161, 12141, 13185, 16701, 16935, 20235, 20803, 21451, 27835, 50103, 50805, 60705, 62409, 64353, 80159, 83505, 104015, 107255, 187227, 193059, 240477, 250515, 312045, 321765, 330797, 395257, 400795, 721431, 936135, 965295, 992391, 1185771, 1202385, 1523021, 1653985, 1976285, 2977173, 3557313, 3607155, 4569063, 4961955, 5928855, 6285143, 7615105, 13707189, 14885865, 17786565, 18855429, 22845315, 23486587, 31425715, 56566287, 68535945, 70459761, 94277145, 117432935, 211379283, 282831435, 352298805, 446245153, 1056896415, 1338735459, 2231225765, 4016206377, 6693677295, 20081031885]

約数ペア:

[(1, 20081031885), (3, 6693677295), (5, 4016206377), (9, 2231225765), (15, 1338735459), (19, 1056896415), (45, 446245153), (57, 352298805), (71, 282831435), (95, 211379283), (171, 117432935), (213, 94277145), (285, 70459761), (293, 68535945), (355, 56566287), (639, 31425715), (855, 23486587), (879, 22845315), (1065, 18855429), (1129, 17786565), (1349, 14885865), (1465, 13707189), (2637, 7615105), (3195, 6285143), (3387, 5928855), (4047, 4961955), (4395, 4569063), (5567, 3607155), (5645, 3557313), (6745, 2977173), (10161, 1976285), (12141, 1653985), (13185, 1523021), (16701, 1202385), (16935, 1185771), (20235, 992391), (20803, 965295), (21451, 936135), (27835, 721431), (50103, 400795), (50805, 395257), (60705, 330797), (62409, 321765), (64353, 312045), (80159, 250515), (83505, 240477), (104015, 193059), (107255, 187227)]