21289428

素因数分解:

$2^2\times 3^2\times {\mathrm{73}}^1\times {\mathrm{8101}}^1$

素因数の和:8184

約数の個数: 36

約数和(自身を含む): 54558868

約数和(自身を除く): 33269440

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 73, 146, 219, 292, 438, 657, 876, 1314, 2628, 8101, 16202, 24303, 32404, 48606, 72909, 97212, 145818, 291636, 591373, 1182746, 1774119, 2365492, 3548238, 5322357, 7096476, 10644714, 21289428]

約数ペア:

[(1, 21289428), (2, 10644714), (3, 7096476), (4, 5322357), (6, 3548238), (9, 2365492), (12, 1774119), (18, 1182746), (36, 591373), (73, 291636), (146, 145818), (219, 97212), (292, 72909), (438, 48606), (657, 32404), (876, 24303), (1314, 16202), (2628, 8101)]