20670640

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{15199}}^1$

素因数の和:15229

約数の個数: 40

約数和(自身を含む): 50889600

約数和(自身を除く): 30218960

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 15199, 30398, 60796, 75995, 121592, 151990, 243184, 258383, 303980, 516766, 607960, 1033532, 1215920, 1291915, 2067064, 2583830, 4134128, 5167660, 10335320, 20670640]

約数ペア:

[(1, 20670640), (2, 10335320), (4, 5167660), (5, 4134128), (8, 2583830), (10, 2067064), (16, 1291915), (17, 1215920), (20, 1033532), (34, 607960), (40, 516766), (68, 303980), (80, 258383), (85, 243184), (136, 151990), (170, 121592), (272, 75995), (340, 60796), (680, 30398), (1360, 15199)]