20398914

素因数分解:

$2^1\times 3^2\times {\mathrm{37}}^1\times {\mathrm{109}}^1\times {\mathrm{281}}^1$

素因数の和:435

約数の個数: 48

約数和(自身を含む): 45971640

約数和(自身を除く): 25572726

約数列:

[1, 2, 3, 6, 9, 18, 37, 74, 109, 111, 218, 222, 281, 327, 333, 562, 654, 666, 843, 981, 1686, 1962, 2529, 4033, 5058, 8066, 10397, 12099, 20794, 24198, 30629, 31191, 36297, 61258, 62382, 72594, 91887, 93573, 183774, 187146, 275661, 551322, 1133273, 2266546, 3399819, 6799638, 10199457, 20398914]

約数ペア:

[(1, 20398914), (2, 10199457), (3, 6799638), (6, 3399819), (9, 2266546), (18, 1133273), (37, 551322), (74, 275661), (109, 187146), (111, 183774), (218, 93573), (222, 91887), (281, 72594), (327, 62382), (333, 61258), (562, 36297), (654, 31191), (666, 30629), (843, 24198), (981, 20794), (1686, 12099), (1962, 10397), (2529, 8066), (4033, 5058)]