20668466

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1$

素因数の和:223

約数の個数: 64

約数和(自身を含む): 41395200

約数和(自身を除く): 20726734

約数列:

[1, 2, 7, 13, 14, 19, 26, 38, 43, 86, 91, 133, 139, 182, 247, 266, 278, 301, 494, 559, 602, 817, 973, 1118, 1634, 1729, 1807, 1946, 2641, 3458, 3614, 3913, 5282, 5719, 5977, 7826, 10621, 11438, 11954, 12649, 18487, 21242, 25298, 34333, 36974, 41839, 68666, 74347, 77701, 83678, 113563, 148694, 155402, 227126, 240331, 480662, 543907, 794941, 1087814, 1476319, 1589882, 2952638, 10334233, 20668466]

約数ペア:

[(1, 20668466), (2, 10334233), (7, 2952638), (13, 1589882), (14, 1476319), (19, 1087814), (26, 794941), (38, 543907), (43, 480662), (86, 240331), (91, 227126), (133, 155402), (139, 148694), (182, 113563), (247, 83678), (266, 77701), (278, 74347), (301, 68666), (494, 41839), (559, 36974), (602, 34333), (817, 25298), (973, 21242), (1118, 18487), (1634, 12649), (1729, 11954), (1807, 11438), (1946, 10621), (2641, 7826), (3458, 5977), (3614, 5719), (3913, 5282)]