639618

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{157}}^1$

素因数の和:266

約数の個数: 32

約数和(自身を含む): 1486464

約数和(自身を除く): 846846

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 97, 157, 194, 291, 314, 471, 582, 679, 942, 1099, 1358, 2037, 2198, 3297, 4074, 6594, 15229, 30458, 45687, 91374, 106603, 213206, 319809, 639618]

約数ペア:

[(1, 639618), (2, 319809), (3, 213206), (6, 106603), (7, 91374), (14, 45687), (21, 30458), (42, 15229), (97, 6594), (157, 4074), (194, 3297), (291, 2198), (314, 2037), (471, 1358), (582, 1099), (679, 942)]