642775240

素因数分解:

$2^3\times 5^1\times {\mathrm{83}}^1\times {\mathrm{193607}}^1$

素因数の和:193701

約数の個数: 32

約数和(自身を含む): 1463676480

約数和(自身を除く): 820901240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 83, 166, 332, 415, 664, 830, 1660, 3320, 193607, 387214, 774428, 968035, 1548856, 1936070, 3872140, 7744280, 16069381, 32138762, 64277524, 80346905, 128555048, 160693810, 321387620, 642775240]

約数ペア:

[(1, 642775240), (2, 321387620), (4, 160693810), (5, 128555048), (8, 80346905), (10, 64277524), (20, 32138762), (40, 16069381), (83, 7744280), (166, 3872140), (332, 1936070), (415, 1548856), (664, 968035), (830, 774428), (1660, 387214), (3320, 193607)]