21290504

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{1049}}^1$

素因数の和:1157

約数の個数: 32

約数和(自身を含む): 41580000

約数和(自身を除く): 20289496

約数列:

[1, 2, 4, 8, 43, 59, 86, 118, 172, 236, 344, 472, 1049, 2098, 2537, 4196, 5074, 8392, 10148, 20296, 45107, 61891, 90214, 123782, 180428, 247564, 360856, 495128, 2661313, 5322626, 10645252, 21290504]

約数ペア:

[(1, 21290504), (2, 10645252), (4, 5322626), (8, 2661313), (43, 495128), (59, 360856), (86, 247564), (118, 180428), (172, 123782), (236, 90214), (344, 61891), (472, 45107), (1049, 20296), (2098, 10148), (2537, 8392), (4196, 5074)]