21195704

素因数分解:

$2^3\times {\mathrm{109}}^2\times {\mathrm{223}}^1$

素因数の和:447

約数の個数: 24

約数和(自身を含む): 40289760

約数和(自身を除く): 19094056

約数列:

[1, 2, 4, 8, 109, 218, 223, 436, 446, 872, 892, 1784, 11881, 23762, 24307, 47524, 48614, 95048, 97228, 194456, 2649463, 5298926, 10597852, 21195704]

約数ペア:

[(1, 21195704), (2, 10597852), (4, 5298926), (8, 2649463), (109, 194456), (218, 97228), (223, 95048), (436, 48614), (446, 47524), (872, 24307), (892, 23762), (1784, 11881)]