16923980

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{20639}}^1$

素因数の和:20689

約数の個数: 24

約数和(自身を含む): 36408960

約数和(自身を除く): 19484980

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 20639, 41278, 82556, 103195, 206390, 412780, 846199, 1692398, 3384796, 4230995, 8461990, 16923980]

約数ペア:

[(1, 16923980), (2, 8461990), (4, 4230995), (5, 3384796), (10, 1692398), (20, 846199), (41, 412780), (82, 206390), (164, 103195), (205, 82556), (410, 41278), (820, 20639)]