64521321

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{107}}^1\times {\mathrm{149}}^1$

素因数の和:349

約数の個数: 32

約数和(自身を含む): 93312000

約数和(自身を除く): 28790679

約数列:

[1, 3, 19, 57, 71, 107, 149, 213, 321, 447, 1349, 2033, 2831, 4047, 6099, 7597, 8493, 10579, 15943, 22791, 31737, 47829, 144343, 201001, 302917, 433029, 603003, 908751, 1131953, 3395859, 21507107, 64521321]

約数ペア:

[(1, 64521321), (3, 21507107), (19, 3395859), (57, 1131953), (71, 908751), (107, 603003), (149, 433029), (213, 302917), (321, 201001), (447, 144343), (1349, 47829), (2033, 31737), (2831, 22791), (4047, 15943), (6099, 10579), (7597, 8493)]