677691

素因数分解:

$3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{347}}^1$

素因数の和:391

約数の個数: 24

約数和(自身を含む): 1158144

約数和(自身を除く): 480453

約数列:

[1, 3, 7, 9, 21, 31, 63, 93, 217, 279, 347, 651, 1041, 1953, 2429, 3123, 7287, 10757, 21861, 32271, 75299, 96813, 225897, 677691]

約数ペア:

[(1, 677691), (3, 225897), (7, 96813), (9, 75299), (21, 32271), (31, 21861), (63, 10757), (93, 7287), (217, 3123), (279, 2429), (347, 1953), (651, 1041)]