81979965

素因数分解:

$3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{1031}}^1$

素因数の和:1095

約数の個数: 64

約数和(自身を含む): 158515200

約数和(自身を除く): 76535235

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, 1031, 1395, 1767, 2565, 2945, 3093, 4185, 5155, 5301, 8835, 9279, 15465, 15903, 19589, 26505, 27837, 31961, 46395, 58767, 79515, 95883, 97945, 139185, 159805, 176301, 287649, 293835, 479415, 528903, 607259, 862947, 881505, 1438245, 1821777, 2644515, 3036295, 4314735, 5465331, 9108885, 16395993, 27326655, 81979965]

約数ペア:

[(1, 81979965), (3, 27326655), (5, 16395993), (9, 9108885), (15, 5465331), (19, 4314735), (27, 3036295), (31, 2644515), (45, 1821777), (57, 1438245), (93, 881505), (95, 862947), (135, 607259), (155, 528903), (171, 479415), (279, 293835), (285, 287649), (465, 176301), (513, 159805), (589, 139185), (837, 97945), (855, 95883), (1031, 79515), (1395, 58767), (1767, 46395), (2565, 31961), (2945, 27837), (3093, 26505), (4185, 19589), (5155, 15903), (5301, 15465), (8835, 9279)]