81942905

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{211}}^1\times {\mathrm{307}}^1$

素因数の和:557

約数の個数: 32

約数和(自身を含む): 112831488

約数和(自身を除く): 30888583

約数列:

[1, 5, 11, 23, 55, 115, 211, 253, 307, 1055, 1265, 1535, 2321, 3377, 4853, 7061, 11605, 16885, 24265, 35305, 53383, 64777, 77671, 266915, 323885, 388355, 712547, 1489871, 3562735, 7449355, 16388581, 81942905]

約数ペア:

[(1, 81942905), (5, 16388581), (11, 7449355), (23, 3562735), (55, 1489871), (115, 712547), (211, 388355), (253, 323885), (307, 266915), (1055, 77671), (1265, 64777), (1535, 53383), (2321, 35305), (3377, 24265), (4853, 16885), (7061, 11605)]