20131088

素因数分解:

$2^4\times {\mathrm{67}}^1\times {\mathrm{89}}^1\times {\mathrm{211}}^1$

素因数の和:375

約数の個数: 40

約数和(自身を含む): 40220640

約数和(自身を除く): 20089552

約数列:

[1, 2, 4, 8, 16, 67, 89, 134, 178, 211, 268, 356, 422, 536, 712, 844, 1072, 1424, 1688, 3376, 5963, 11926, 14137, 18779, 23852, 28274, 37558, 47704, 56548, 75116, 95408, 113096, 150232, 226192, 300464, 1258193, 2516386, 5032772, 10065544, 20131088]

約数ペア:

[(1, 20131088), (2, 10065544), (4, 5032772), (8, 2516386), (16, 1258193), (67, 300464), (89, 226192), (134, 150232), (178, 113096), (211, 95408), (268, 75116), (356, 56548), (422, 47704), (536, 37558), (712, 28274), (844, 23852), (1072, 18779), (1424, 14137), (1688, 11926), (3376, 5963)]