21193742

素因数分解:

$2^1\times {\mathrm{109}}^1\times {\mathrm{191}}^1\times {\mathrm{509}}^1$

素因数の和:811

約数の個数: 16

約数和(自身を含む): 32313600

約数和(自身を除く): 11119858

約数列:

[1, 2, 109, 191, 218, 382, 509, 1018, 20819, 41638, 55481, 97219, 110962, 194438, 10596871, 21193742]

約数ペア:

[(1, 21193742), (2, 10596871), (109, 194438), (191, 110962), (218, 97219), (382, 55481), (509, 41638), (1018, 20819)]