21836256505

素因数分解:

$5^1\times 7^1\times {\mathrm{397}}^1\times {\mathrm{401}}^1\times {\mathrm{3919}}^1$

素因数の和:4729

約数の個数: 32

約数和(自身を含む): 30104847360

約数和(自身を除く): 8268590855

約数列:

[1, 5, 7, 35, 397, 401, 1985, 2005, 2779, 2807, 3919, 13895, 14035, 19595, 27433, 137165, 159197, 795985, 1114379, 1555843, 1571519, 5571895, 7779215, 7857595, 10890901, 11000633, 54454505, 55003165, 623893043, 3119465215, 4367251301, 21836256505]

約数ペア:

[(1, 21836256505), (5, 4367251301), (7, 3119465215), (35, 623893043), (397, 55003165), (401, 54454505), (1985, 11000633), (2005, 10890901), (2779, 7857595), (2807, 7779215), (3919, 5571895), (13895, 1571519), (14035, 1555843), (19595, 1114379), (27433, 795985), (137165, 159197)]