21780174

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{2711}}^1$

素因数の和:2832

約数の個数: 32

約数和(自身を含む): 47384064

約数和(自身を除く): 25603890

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 103, 206, 309, 618, 1339, 2678, 2711, 4017, 5422, 8034, 8133, 16266, 35243, 70486, 105729, 211458, 279233, 558466, 837699, 1675398, 3630029, 7260058, 10890087, 21780174]

約数ペア:

[(1, 21780174), (2, 10890087), (3, 7260058), (6, 3630029), (13, 1675398), (26, 837699), (39, 558466), (78, 279233), (103, 211458), (206, 105729), (309, 70486), (618, 35243), (1339, 16266), (2678, 8133), (2711, 8034), (4017, 5422)]