21000687165

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{20290519}}^1$

素因数の和:20290553

約数の個数: 24

約数和(自身を含む): 37983853440

約数和(自身を除く): 16983166275

約数列:

[1, 3, 5, 9, 15, 23, 45, 69, 115, 207, 345, 1035, 20290519, 60871557, 101452595, 182614671, 304357785, 466681937, 913073355, 1400045811, 2333409685, 4200137433, 7000229055, 21000687165]

約数ペア:

[(1, 21000687165), (3, 7000229055), (5, 4200137433), (9, 2333409685), (15, 1400045811), (23, 913073355), (45, 466681937), (69, 304357785), (115, 182614671), (207, 101452595), (345, 60871557), (1035, 20290519)]