80399420

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{41443}}^1$

素因数の和:41549

約数の個数: 24

約数和(自身を含む): 170583504

約数和(自身を除く): 90184084

約数列:

[1, 2, 4, 5, 10, 20, 97, 194, 388, 485, 970, 1940, 41443, 82886, 165772, 207215, 414430, 828860, 4019971, 8039942, 16079884, 20099855, 40199710, 80399420]

約数ペア:

[(1, 80399420), (2, 40199710), (4, 20099855), (5, 16079884), (10, 8039942), (20, 4019971), (97, 828860), (194, 414430), (388, 207215), (485, 165772), (970, 82886), (1940, 41443)]