20423667

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{389}}^1$

素因数の和:483

約数の個数: 32

約数和(自身を含む): 31299840

約数和(自身を除く): 10876173

約数列:

[1, 3, 11, 33, 37, 43, 111, 129, 389, 407, 473, 1167, 1221, 1419, 1591, 4279, 4773, 12837, 14393, 16727, 17501, 43179, 50181, 52503, 158323, 183997, 474969, 551991, 618899, 1856697, 6807889, 20423667]

約数ペア:

[(1, 20423667), (3, 6807889), (11, 1856697), (33, 618899), (37, 551991), (43, 474969), (111, 183997), (129, 158323), (389, 52503), (407, 50181), (473, 43179), (1167, 17501), (1221, 16727), (1419, 14393), (1591, 12837), (4279, 4773)]