278984705

素因数分解:

$5^1\times {\mathrm{17}}^3\times {\mathrm{41}}^1\times {\mathrm{277}}^1$

素因数の和:374

約数の個数: 32

約数和(自身を含む): 365692320

約数和(自身を除く): 86707615

約数列:

[1, 5, 17, 41, 85, 205, 277, 289, 697, 1385, 1445, 3485, 4709, 4913, 11357, 11849, 23545, 24565, 56785, 59245, 80053, 193069, 201433, 400265, 965345, 1007165, 1360901, 3282173, 6804505, 16410865, 55796941, 278984705]

約数ペア:

[(1, 278984705), (5, 55796941), (17, 16410865), (41, 6804505), (85, 3282173), (205, 1360901), (277, 1007165), (289, 965345), (697, 400265), (1385, 201433), (1445, 193069), (3485, 80053), (4709, 59245), (4913, 56785), (11357, 24565), (11849, 23545)]