19612516

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{1721}}^1$

素因数の和:1780

約数の個数: 48

約数和(自身を含む): 43972992

約数和(自身を除く): 24360476

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 37, 44, 74, 77, 148, 154, 259, 308, 407, 518, 814, 1036, 1628, 1721, 2849, 3442, 5698, 6884, 11396, 12047, 18931, 24094, 37862, 48188, 63677, 75724, 127354, 132517, 254708, 265034, 445739, 530068, 700447, 891478, 1400894, 1782956, 2801788, 4903129, 9806258, 19612516]

約数ペア:

[(1, 19612516), (2, 9806258), (4, 4903129), (7, 2801788), (11, 1782956), (14, 1400894), (22, 891478), (28, 700447), (37, 530068), (44, 445739), (74, 265034), (77, 254708), (148, 132517), (154, 127354), (259, 75724), (308, 63677), (407, 48188), (518, 37862), (814, 24094), (1036, 18931), (1628, 12047), (1721, 11396), (2849, 6884), (3442, 5698)]