8400220

素因数分解:

$2^2\times 5^1\times {\mathrm{263}}^1\times {\mathrm{1597}}^1$

素因数の和:1869

約数の個数: 24

約数和(自身を含む): 17718624

約数和(自身を除く): 9318404

約数列:

[1, 2, 4, 5, 10, 20, 263, 526, 1052, 1315, 1597, 2630, 3194, 5260, 6388, 7985, 15970, 31940, 420011, 840022, 1680044, 2100055, 4200110, 8400220]

約数ペア:

[(1, 8400220), (2, 4200110), (4, 2100055), (5, 1680044), (10, 840022), (20, 420011), (263, 31940), (526, 15970), (1052, 7985), (1315, 6388), (1597, 5260), (2630, 3194)]