21496880

素因数分解:

$2^4\times 5^1\times {\mathrm{379}}^1\times {\mathrm{709}}^1$

素因数の和:1101

約数の個数: 40

約数和(自身を含む): 50182800

約数和(自身を除く): 28685920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 379, 709, 758, 1418, 1516, 1895, 2836, 3032, 3545, 3790, 5672, 6064, 7090, 7580, 11344, 14180, 15160, 28360, 30320, 56720, 268711, 537422, 1074844, 1343555, 2149688, 2687110, 4299376, 5374220, 10748440, 21496880]

約数ペア:

[(1, 21496880), (2, 10748440), (4, 5374220), (5, 4299376), (8, 2687110), (10, 2149688), (16, 1343555), (20, 1074844), (40, 537422), (80, 268711), (379, 56720), (709, 30320), (758, 28360), (1418, 15160), (1516, 14180), (1895, 11344), (2836, 7580), (3032, 7090), (3545, 6064), (3790, 5672)]