21648250

素因数分解:

$2^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{6661}}^1$

素因数の和:6691

約数の個数: 32

約数和(自身を含む): 43649424

約数和(自身を除く): 22001174

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 125, 130, 250, 325, 650, 1625, 3250, 6661, 13322, 33305, 66610, 86593, 166525, 173186, 333050, 432965, 832625, 865930, 1665250, 2164825, 4329650, 10824125, 21648250]

約数ペア:

[(1, 21648250), (2, 10824125), (5, 4329650), (10, 2164825), (13, 1665250), (25, 865930), (26, 832625), (50, 432965), (65, 333050), (125, 173186), (130, 166525), (250, 86593), (325, 66610), (650, 33305), (1625, 13322), (3250, 6661)]