81578205

素因数分解:

$3^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{193}}^1$

素因数の和:339

約数の個数: 64

約数和(自身を含む): 151971840

約数和(自身を除く): 70393635

約数列:

[1, 3, 5, 9, 15, 27, 31, 45, 93, 101, 135, 155, 193, 279, 303, 465, 505, 579, 837, 909, 965, 1395, 1515, 1737, 2727, 2895, 3131, 4185, 4545, 5211, 5983, 8685, 9393, 13635, 15655, 17949, 19493, 26055, 28179, 29915, 46965, 53847, 58479, 84537, 89745, 97465, 140895, 161541, 175437, 269235, 292395, 422685, 526311, 604283, 807705, 877185, 1812849, 2631555, 3021415, 5438547, 9064245, 16315641, 27192735, 81578205]

約数ペア:

[(1, 81578205), (3, 27192735), (5, 16315641), (9, 9064245), (15, 5438547), (27, 3021415), (31, 2631555), (45, 1812849), (93, 877185), (101, 807705), (135, 604283), (155, 526311), (193, 422685), (279, 292395), (303, 269235), (465, 175437), (505, 161541), (579, 140895), (837, 97465), (909, 89745), (965, 84537), (1395, 58479), (1515, 53847), (1737, 46965), (2727, 29915), (2895, 28179), (3131, 26055), (4185, 19493), (4545, 17949), (5211, 15655), (5983, 13635), (8685, 9393)]