2718640

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{1999}}^1$

素因数の和:2029

約数の個数: 40

約数和(自身を含む): 6696000

約数和(自身を除く): 3977360

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 1999, 3998, 7996, 9995, 15992, 19990, 31984, 33983, 39980, 67966, 79960, 135932, 159920, 169915, 271864, 339830, 543728, 679660, 1359320, 2718640]

約数ペア:

[(1, 2718640), (2, 1359320), (4, 679660), (5, 543728), (8, 339830), (10, 271864), (16, 169915), (17, 159920), (20, 135932), (34, 79960), (40, 67966), (68, 39980), (80, 33983), (85, 31984), (136, 19990), (170, 15992), (272, 9995), (340, 7996), (680, 3998), (1360, 1999)]