663740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{431}}^1$

素因数の和:458

約数の個数: 48

約数和(自身を含む): 1741824

約数和(自身を除く): 1078084

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 431, 770, 862, 1540, 1724, 2155, 3017, 4310, 4741, 6034, 8620, 9482, 12068, 15085, 18964, 23705, 30170, 33187, 47410, 60340, 66374, 94820, 132748, 165935, 331870, 663740]

約数ペア:

[(1, 663740), (2, 331870), (4, 165935), (5, 132748), (7, 94820), (10, 66374), (11, 60340), (14, 47410), (20, 33187), (22, 30170), (28, 23705), (35, 18964), (44, 15085), (55, 12068), (70, 9482), (77, 8620), (110, 6034), (140, 4741), (154, 4310), (220, 3017), (308, 2155), (385, 1724), (431, 1540), (770, 862)]