20911130

素因数分解:

$2^1\times 5^1\times {\mathrm{263}}^1\times {\mathrm{7951}}^1$

素因数の和:8221

約数の個数: 16

約数和(自身を含む): 37787904

約数和(自身を除く): 16876774

約数列:

[1, 2, 5, 10, 263, 526, 1315, 2630, 7951, 15902, 39755, 79510, 2091113, 4182226, 10455565, 20911130]

約数ペア:

[(1, 20911130), (2, 10455565), (5, 4182226), (10, 2091113), (263, 79510), (526, 39755), (1315, 15902), (2630, 7951)]