81973570

素因数分解:

$2^1\times 5^1\times 7^3\times {\mathrm{23899}}^1$

素因数の和:23927

約数の個数: 32

約数和(自身を含む): 172080000

約数和(自身を除く): 90106430

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 343, 490, 686, 1715, 3430, 23899, 47798, 119495, 167293, 238990, 334586, 836465, 1171051, 1672930, 2342102, 5855255, 8197357, 11710510, 16394714, 40986785, 81973570]

約数ペア:

[(1, 81973570), (2, 40986785), (5, 16394714), (7, 11710510), (10, 8197357), (14, 5855255), (35, 2342102), (49, 1672930), (70, 1171051), (98, 836465), (245, 334586), (343, 238990), (490, 167293), (686, 119495), (1715, 47798), (3430, 23899)]