20506356

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1019}}^1$

素因数の和:1085

約数の個数: 72

約数和(自身を含む): 57177120

約数和(自身を除く): 36670764

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 43, 52, 78, 86, 117, 129, 156, 172, 234, 258, 387, 468, 516, 559, 774, 1019, 1118, 1548, 1677, 2038, 2236, 3057, 3354, 4076, 5031, 6114, 6708, 9171, 10062, 12228, 13247, 18342, 20124, 26494, 36684, 39741, 43817, 52988, 79482, 87634, 119223, 131451, 158964, 175268, 238446, 262902, 394353, 476892, 525804, 569621, 788706, 1139242, 1577412, 1708863, 2278484, 3417726, 5126589, 6835452, 10253178, 20506356]

約数ペア:

[(1, 20506356), (2, 10253178), (3, 6835452), (4, 5126589), (6, 3417726), (9, 2278484), (12, 1708863), (13, 1577412), (18, 1139242), (26, 788706), (36, 569621), (39, 525804), (43, 476892), (52, 394353), (78, 262902), (86, 238446), (117, 175268), (129, 158964), (156, 131451), (172, 119223), (234, 87634), (258, 79482), (387, 52988), (468, 43817), (516, 39741), (559, 36684), (774, 26494), (1019, 20124), (1118, 18342), (1548, 13247), (1677, 12228), (2038, 10062), (2236, 9171), (3057, 6708), (3354, 6114), (4076, 5031)]