639678

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{139}}^1$

素因数の和:216

約数の個数: 32

約数和(自身を含む): 1411200

約数和(自身を除く): 771522

約数列:

[1, 2, 3, 6, 13, 26, 39, 59, 78, 118, 139, 177, 278, 354, 417, 767, 834, 1534, 1807, 2301, 3614, 4602, 5421, 8201, 10842, 16402, 24603, 49206, 106613, 213226, 319839, 639678]

約数ペア:

[(1, 639678), (2, 319839), (3, 213226), (6, 106613), (13, 49206), (26, 24603), (39, 16402), (59, 10842), (78, 8201), (118, 5421), (139, 4602), (177, 3614), (278, 2301), (354, 1807), (417, 1534), (767, 834)]