81585540

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{281}}^1\times {\mathrm{1613}}^1$

素因数の和:1909

約数の個数: 72

約数和(自身を含む): 248510808

約数和(自身を除く): 166925268

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, 1613, 1686, 2529, 2810, 3226, 3372, 4215, 4839, 5058, 5620, 6452, 8065, 8430, 9678, 10116, 12645, 14517, 16130, 16860, 19356, 24195, 25290, 29034, 32260, 48390, 50580, 58068, 72585, 96780, 145170, 290340, 453253, 906506, 1359759, 1813012, 2266265, 2719518, 4079277, 4532530, 5439036, 6798795, 8158554, 9065060, 13597590, 16317108, 20396385, 27195180, 40792770, 81585540]

約数ペア:

[(1, 81585540), (2, 40792770), (3, 27195180), (4, 20396385), (5, 16317108), (6, 13597590), (9, 9065060), (10, 8158554), (12, 6798795), (15, 5439036), (18, 4532530), (20, 4079277), (30, 2719518), (36, 2266265), (45, 1813012), (60, 1359759), (90, 906506), (180, 453253), (281, 290340), (562, 145170), (843, 96780), (1124, 72585), (1405, 58068), (1613, 50580), (1686, 48390), (2529, 32260), (2810, 29034), (3226, 25290), (3372, 24195), (4215, 19356), (4839, 16860), (5058, 16130), (5620, 14517), (6452, 12645), (8065, 10116), (8430, 9678)]