18160540

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{22147}}^1$

素因数の和:22197

約数の個数: 24

約数和(自身を含む): 39069072

約数和(自身を除く): 20908532

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 22147, 44294, 88588, 110735, 221470, 442940, 908027, 1816054, 3632108, 4540135, 9080270, 18160540]

約数ペア:

[(1, 18160540), (2, 9080270), (4, 4540135), (5, 3632108), (10, 1816054), (20, 908027), (41, 442940), (82, 221470), (164, 110735), (205, 88588), (410, 44294), (820, 22147)]