18213620

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{151}}^1\times {\mathrm{163}}^1$

素因数の和:360

約数の個数: 48

約数和(自身を含む): 39785088

約数和(自身を除く): 21571468

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 148, 151, 163, 185, 302, 326, 370, 604, 652, 740, 755, 815, 1510, 1630, 3020, 3260, 5587, 6031, 11174, 12062, 22348, 24124, 24613, 27935, 30155, 49226, 55870, 60310, 98452, 111740, 120620, 123065, 246130, 492260, 910681, 1821362, 3642724, 4553405, 9106810, 18213620]

約数ペア:

[(1, 18213620), (2, 9106810), (4, 4553405), (5, 3642724), (10, 1821362), (20, 910681), (37, 492260), (74, 246130), (148, 123065), (151, 120620), (163, 111740), (185, 98452), (302, 60310), (326, 55870), (370, 49226), (604, 30155), (652, 27935), (740, 24613), (755, 24124), (815, 22348), (1510, 12062), (1630, 11174), (3020, 6031), (3260, 5587)]