21440686

素因数分解:

$2^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{97}}^1\times {\mathrm{103}}^1$

素因数の和:268

約数の個数: 32

約数和(自身を含む): 34856640

約数和(自身を除く): 13415954

約数列:

[1, 2, 29, 37, 58, 74, 97, 103, 194, 206, 1073, 2146, 2813, 2987, 3589, 3811, 5626, 5974, 7178, 7622, 9991, 19982, 104081, 110519, 208162, 221038, 289739, 369667, 579478, 739334, 10720343, 21440686]

約数ペア:

[(1, 21440686), (2, 10720343), (29, 739334), (37, 579478), (58, 369667), (74, 289739), (97, 221038), (103, 208162), (194, 110519), (206, 104081), (1073, 19982), (2146, 9991), (2813, 7622), (2987, 7178), (3589, 5974), (3811, 5626)]