261410355

素因数分解:

$3^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{21757}}^1$

素因数の和:21860

約数の個数: 32

約数和(自身を含む): 469972800

約数和(自身を除く): 208562445

約数列:

[1, 3, 5, 9, 15, 27, 45, 89, 135, 267, 445, 801, 1335, 2403, 4005, 12015, 21757, 65271, 108785, 195813, 326355, 587439, 979065, 1936373, 2937195, 5809119, 9681865, 17427357, 29045595, 52282071, 87136785, 261410355]

約数ペア:

[(1, 261410355), (3, 87136785), (5, 52282071), (9, 29045595), (15, 17427357), (27, 9681865), (45, 5809119), (89, 2937195), (135, 1936373), (267, 979065), (445, 587439), (801, 326355), (1335, 195813), (2403, 108785), (4005, 65271), (12015, 21757)]