81873945

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{3089}}^1$

素因数の和:3150

約数の個数: 48

約数和(自身を含む): 154252800

約数和(自身を除く): 72378855

約数列:

[1, 3, 5, 9, 15, 19, 31, 45, 57, 93, 95, 155, 171, 279, 285, 465, 589, 855, 1395, 1767, 2945, 3089, 5301, 8835, 9267, 15445, 26505, 27801, 46335, 58691, 95759, 139005, 176073, 287277, 293455, 478795, 528219, 861831, 880365, 1436385, 1819421, 2641095, 4309155, 5458263, 9097105, 16374789, 27291315, 81873945]

約数ペア:

[(1, 81873945), (3, 27291315), (5, 16374789), (9, 9097105), (15, 5458263), (19, 4309155), (31, 2641095), (45, 1819421), (57, 1436385), (93, 880365), (95, 861831), (155, 528219), (171, 478795), (279, 293455), (285, 287277), (465, 176073), (589, 139005), (855, 95759), (1395, 58691), (1767, 46335), (2945, 27801), (3089, 26505), (5301, 15445), (8835, 9267)]