21157994

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{2551}}^1$

素因数の和:2606

約数の個数: 32

約数和(自身を含む): 38586240

約数和(自身を除く): 17428246

約数列:

[1, 2, 11, 13, 22, 26, 29, 58, 143, 286, 319, 377, 638, 754, 2551, 4147, 5102, 8294, 28061, 33163, 56122, 66326, 73979, 147958, 364793, 729586, 813769, 961727, 1627538, 1923454, 10578997, 21157994]

約数ペア:

[(1, 21157994), (2, 10578997), (11, 1923454), (13, 1627538), (22, 961727), (26, 813769), (29, 729586), (58, 364793), (143, 147958), (286, 73979), (319, 66326), (377, 56122), (638, 33163), (754, 28061), (2551, 8294), (4147, 5102)]