20978704

素因数分解:

$2^4\times {\mathrm{37}}^1\times {\mathrm{35437}}^1$

素因数の和:35482

約数の個数: 20

約数和(自身を含む): 41745964

約数和(自身を除く): 20767260

約数列:

[1, 2, 4, 8, 16, 37, 74, 148, 296, 592, 35437, 70874, 141748, 283496, 566992, 1311169, 2622338, 5244676, 10489352, 20978704]

約数ペア:

[(1, 20978704), (2, 10489352), (4, 5244676), (8, 2622338), (16, 1311169), (37, 566992), (74, 283496), (148, 141748), (296, 70874), (592, 35437)]