1640371912

素因数分解:

$2^3\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{128879}}^1$

素因数の和:128965

約数の個数: 32

約数和(自身を含む): 3232310400

約数和(自身を除く): 1591938488

約数列:

[1, 2, 4, 8, 37, 43, 74, 86, 148, 172, 296, 344, 1591, 3182, 6364, 12728, 128879, 257758, 515516, 1031032, 4768523, 5541797, 9537046, 11083594, 19074092, 22167188, 38148184, 44334376, 205046489, 410092978, 820185956, 1640371912]

約数ペア:

[(1, 1640371912), (2, 820185956), (4, 410092978), (8, 205046489), (37, 44334376), (43, 38148184), (74, 22167188), (86, 19074092), (148, 11083594), (172, 9537046), (296, 5541797), (344, 4768523), (1591, 1031032), (3182, 515516), (6364, 257758), (12728, 128879)]