20960080

素因数分解:

$2^4\times 5^1\times {\mathrm{127}}^1\times {\mathrm{2063}}^1$

素因数の和:2203

約数の個数: 40

約数和(自身を含む): 49139712

約数和(自身を除く): 28179632

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 127, 254, 508, 635, 1016, 1270, 2032, 2063, 2540, 4126, 5080, 8252, 10160, 10315, 16504, 20630, 33008, 41260, 82520, 165040, 262001, 524002, 1048004, 1310005, 2096008, 2620010, 4192016, 5240020, 10480040, 20960080]

約数ペア:

[(1, 20960080), (2, 10480040), (4, 5240020), (5, 4192016), (8, 2620010), (10, 2096008), (16, 1310005), (20, 1048004), (40, 524002), (80, 262001), (127, 165040), (254, 82520), (508, 41260), (635, 33008), (1016, 20630), (1270, 16504), (2032, 10315), (2063, 10160), (2540, 8252), (4126, 5080)]