19882340

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{379}}^1$

素因数の和:492

約数の個数: 48

約数和(自身を含む): 43538880

約数和(自身を除く): 23656540

約数列:

[1, 2, 4, 5, 10, 20, 43, 61, 86, 122, 172, 215, 244, 305, 379, 430, 610, 758, 860, 1220, 1516, 1895, 2623, 3790, 5246, 7580, 10492, 13115, 16297, 23119, 26230, 32594, 46238, 52460, 65188, 81485, 92476, 115595, 162970, 231190, 325940, 462380, 994117, 1988234, 3976468, 4970585, 9941170, 19882340]

約数ペア:

[(1, 19882340), (2, 9941170), (4, 4970585), (5, 3976468), (10, 1988234), (20, 994117), (43, 462380), (61, 325940), (86, 231190), (122, 162970), (172, 115595), (215, 92476), (244, 81485), (305, 65188), (379, 52460), (430, 46238), (610, 32594), (758, 26230), (860, 23119), (1220, 16297), (1516, 13115), (1895, 10492), (2623, 7580), (3790, 5246)]