21505578

素因数分解:

$2^1\times 3^1\times {\mathrm{17}}^1\times {\mathrm{210839}}^1$

素因数の和:210861

約数の個数: 16

約数和(自身を含む): 45541440

約数和(自身を除く): 24035862

約数列:

[1, 2, 3, 6, 17, 34, 51, 102, 210839, 421678, 632517, 1265034, 3584263, 7168526, 10752789, 21505578]

約数ペア:

[(1, 21505578), (2, 10752789), (3, 7168526), (6, 3584263), (17, 1265034), (34, 632517), (51, 421678), (102, 210839)]