21720630

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{724021}}^1$

素因数の和:724031

約数の個数: 16

約数和(自身を含む): 52129584

約数和(自身を除く): 30408954

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 724021, 1448042, 2172063, 3620105, 4344126, 7240210, 10860315, 21720630]

約数ペア:

[(1, 21720630), (2, 10860315), (3, 7240210), (5, 4344126), (6, 3620105), (10, 2172063), (15, 1448042), (30, 724021)]