261635540

素因数分解:

$2^2\times 5^1\times {\mathrm{2423}}^1\times {\mathrm{5399}}^1$

素因数の和:7831

約数の個数: 24

約数和(自身を含む): 549763200

約数和(自身を除く): 288127660

約数列:

[1, 2, 4, 5, 10, 20, 2423, 4846, 5399, 9692, 10798, 12115, 21596, 24230, 26995, 48460, 53990, 107980, 13081777, 26163554, 52327108, 65408885, 130817770, 261635540]

約数ペア:

[(1, 261635540), (2, 130817770), (4, 65408885), (5, 52327108), (10, 26163554), (20, 13081777), (2423, 107980), (4846, 53990), (5399, 48460), (9692, 26995), (10798, 24230), (12115, 21596)]