81281950

素因数分解:

$2^1\times 5^2\times {\mathrm{193}}^1\times {\mathrm{8423}}^1$

素因数の和:8628

約数の個数: 24

約数和(自身を含む): 151985808

約数和(自身を除く): 70703858

約数列:

[1, 2, 5, 10, 25, 50, 193, 386, 965, 1930, 4825, 8423, 9650, 16846, 42115, 84230, 210575, 421150, 1625639, 3251278, 8128195, 16256390, 40640975, 81281950]

約数ペア:

[(1, 81281950), (2, 40640975), (5, 16256390), (10, 8128195), (25, 3251278), (50, 1625639), (193, 421150), (386, 210575), (965, 84230), (1930, 42115), (4825, 16846), (8423, 9650)]