128518887

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{2447}}^1$

素因数の和:2559

約数の個数: 32

約数和(自身を含む): 203986944

約数和(自身を除く): 75468057

約数列:

[1, 3, 7, 21, 41, 61, 123, 183, 287, 427, 861, 1281, 2447, 2501, 7341, 7503, 17129, 17507, 51387, 52521, 100327, 149267, 300981, 447801, 702289, 1044869, 2106867, 3134607, 6119947, 18359841, 42839629, 128518887]

約数ペア:

[(1, 128518887), (3, 42839629), (7, 18359841), (21, 6119947), (41, 3134607), (61, 2106867), (123, 1044869), (183, 702289), (287, 447801), (427, 300981), (861, 149267), (1281, 100327), (2447, 52521), (2501, 51387), (7341, 17507), (7503, 17129)]