21720210

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{724007}}^1$

素因数の和:724017

約数の個数: 16

約数和(自身を含む): 52128576

約数和(自身を除く): 30408366

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 724007, 1448014, 2172021, 3620035, 4344042, 7240070, 10860105, 21720210]

約数ペア:

[(1, 21720210), (2, 10860105), (3, 7240070), (5, 4344042), (6, 3620035), (10, 2172021), (15, 1448014), (30, 724007)]