81305200

素因数分解:

$2^4\times 5^2\times {\mathrm{181}}^1\times {\mathrm{1123}}^1$

素因数の和:1322

約数の個数: 60

約数和(自身を含む): 196589848

約数和(自身を除く): 115284648

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 181, 200, 362, 400, 724, 905, 1123, 1448, 1810, 2246, 2896, 3620, 4492, 4525, 5615, 7240, 8984, 9050, 11230, 14480, 17968, 18100, 22460, 28075, 36200, 44920, 56150, 72400, 89840, 112300, 203263, 224600, 406526, 449200, 813052, 1016315, 1626104, 2032630, 3252208, 4065260, 5081575, 8130520, 10163150, 16261040, 20326300, 40652600, 81305200]

約数ペア:

[(1, 81305200), (2, 40652600), (4, 20326300), (5, 16261040), (8, 10163150), (10, 8130520), (16, 5081575), (20, 4065260), (25, 3252208), (40, 2032630), (50, 1626104), (80, 1016315), (100, 813052), (181, 449200), (200, 406526), (362, 224600), (400, 203263), (724, 112300), (905, 89840), (1123, 72400), (1448, 56150), (1810, 44920), (2246, 36200), (2896, 28075), (3620, 22460), (4492, 18100), (4525, 17968), (5615, 14480), (7240, 11230), (8984, 9050)]