221098640

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{394819}}^1$

素因数の和:394839

約数の個数: 40

約数和(自身を含む): 587492160

約数和(自身を除く): 366393520

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 394819, 789638, 1579276, 1974095, 2763733, 3158552, 3948190, 5527466, 6317104, 7896380, 11054932, 13818665, 15792760, 22109864, 27637330, 31585520, 44219728, 55274660, 110549320, 221098640]

約数ペア:

[(1, 221098640), (2, 110549320), (4, 55274660), (5, 44219728), (7, 31585520), (8, 27637330), (10, 22109864), (14, 15792760), (16, 13818665), (20, 11054932), (28, 7896380), (35, 6317104), (40, 5527466), (56, 3948190), (70, 3158552), (80, 2763733), (112, 1974095), (140, 1579276), (280, 789638), (560, 394819)]