20908836

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1039}}^1$

素因数の和:1105

約数の個数: 72

約数和(自身を含む): 58298240

約数和(自身を除く): 37389404

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, 1039, 1118, 1548, 1677, 2078, 2236, 3117, 3354, 4156, 5031, 6234, 6708, 9351, 10062, 12468, 13507, 18702, 20124, 27014, 37404, 40521, 44677, 54028, 81042, 89354, 121563, 134031, 162084, 178708, 243126, 268062, 402093, 486252, 536124, 580801, 804186, 1161602, 1608372, 1742403, 2323204, 3484806, 5227209, 6969612, 10454418, 20908836]

約数ペア:

[(1, 20908836), (2, 10454418), (3, 6969612), (4, 5227209), (6, 3484806), (9, 2323204), (12, 1742403), (13, 1608372), (18, 1161602), (26, 804186), (36, 580801), (39, 536124), (43, 486252), (52, 402093), (78, 268062), (86, 243126), (117, 178708), (129, 162084), (156, 134031), (172, 121563), (234, 89354), (258, 81042), (387, 54028), (468, 44677), (516, 40521), (559, 37404), (774, 27014), (1039, 20124), (1118, 18702), (1548, 13507), (1677, 12468), (2078, 10062), (2236, 9351), (3117, 6708), (3354, 6234), (4156, 5031)]