21916580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{4231}}^1$

素因数の和:4284

約数の個数: 48

約数和(自身を含む): 54034176

約数和(自身を除く): 32117596

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 37, 70, 74, 140, 148, 185, 259, 370, 518, 740, 1036, 1295, 2590, 4231, 5180, 8462, 16924, 21155, 29617, 42310, 59234, 84620, 118468, 148085, 156547, 296170, 313094, 592340, 626188, 782735, 1095829, 1565470, 2191658, 3130940, 4383316, 5479145, 10958290, 21916580]

約数ペア:

[(1, 21916580), (2, 10958290), (4, 5479145), (5, 4383316), (7, 3130940), (10, 2191658), (14, 1565470), (20, 1095829), (28, 782735), (35, 626188), (37, 592340), (70, 313094), (74, 296170), (140, 156547), (148, 148085), (185, 118468), (259, 84620), (370, 59234), (518, 42310), (740, 29617), (1036, 21155), (1295, 16924), (2590, 8462), (4231, 5180)]