21967220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{3221}}^1$

素因数の和:3272

約数の個数: 48

約数和(自身を含む): 51964416

約数和(自身を除く): 29997196

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 31, 44, 55, 62, 110, 124, 155, 220, 310, 341, 620, 682, 1364, 1705, 3221, 3410, 6442, 6820, 12884, 16105, 32210, 35431, 64420, 70862, 99851, 141724, 177155, 199702, 354310, 399404, 499255, 708620, 998510, 1098361, 1997020, 2196722, 4393444, 5491805, 10983610, 21967220]

約数ペア:

[(1, 21967220), (2, 10983610), (4, 5491805), (5, 4393444), (10, 2196722), (11, 1997020), (20, 1098361), (22, 998510), (31, 708620), (44, 499255), (55, 399404), (62, 354310), (110, 199702), (124, 177155), (155, 141724), (220, 99851), (310, 70862), (341, 64420), (620, 35431), (682, 32210), (1364, 16105), (1705, 12884), (3221, 6820), (3410, 6442)]