20728218

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{211}}^1\times {\mathrm{2339}}^1$

素因数の和:2562

約数の個数: 32

約数和(自身を含む): 47623680

約数和(自身を除く): 26895462

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 211, 422, 633, 1266, 1477, 2339, 2954, 4431, 4678, 7017, 8862, 14034, 16373, 32746, 49119, 98238, 493529, 987058, 1480587, 2961174, 3454703, 6909406, 10364109, 20728218]

約数ペア:

[(1, 20728218), (2, 10364109), (3, 6909406), (6, 3454703), (7, 2961174), (14, 1480587), (21, 987058), (42, 493529), (211, 98238), (422, 49119), (633, 32746), (1266, 16373), (1477, 14034), (2339, 8862), (2954, 7017), (4431, 4678)]