81889020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{281}}^1\times {\mathrm{1619}}^1$

素因数の和:1915

約数の個数: 72

約数和(自身を含む): 249434640

約数和(自身を除く): 167545620

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 281, 562, 843, 1124, 1405, 1619, 1686, 2529, 2810, 3238, 3372, 4215, 4857, 5058, 5620, 6476, 8095, 8430, 9714, 10116, 12645, 14571, 16190, 16860, 19428, 24285, 25290, 29142, 32380, 48570, 50580, 58284, 72855, 97140, 145710, 291420, 454939, 909878, 1364817, 1819756, 2274695, 2729634, 4094451, 4549390, 5459268, 6824085, 8188902, 9098780, 13648170, 16377804, 20472255, 27296340, 40944510, 81889020]

約数ペア:

[(1, 81889020), (2, 40944510), (3, 27296340), (4, 20472255), (5, 16377804), (6, 13648170), (9, 9098780), (10, 8188902), (12, 6824085), (15, 5459268), (18, 4549390), (20, 4094451), (30, 2729634), (36, 2274695), (45, 1819756), (60, 1364817), (90, 909878), (180, 454939), (281, 291420), (562, 145710), (843, 97140), (1124, 72855), (1405, 58284), (1619, 50580), (1686, 48570), (2529, 32380), (2810, 29142), (3238, 25290), (3372, 24285), (4215, 19428), (4857, 16860), (5058, 16190), (5620, 14571), (6476, 12645), (8095, 10116), (8430, 9714)]