21198712

素因数分解:

$2^3\times {\mathrm{659}}^1\times {\mathrm{4021}}^1$

素因数の和:4686

約数の個数: 16

約数和(自身を含む): 39817800

約数和(自身を除く): 18619088

約数列:

[1, 2, 4, 8, 659, 1318, 2636, 4021, 5272, 8042, 16084, 32168, 2649839, 5299678, 10599356, 21198712]

約数ペア:

[(1, 21198712), (2, 10599356), (4, 5299678), (8, 2649839), (659, 32168), (1318, 16084), (2636, 8042), (4021, 5272)]