20456528372

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{1240391}}^1$

素因数の和:1240452

約数の個数: 48

約数和(自身を含む): 44455649280

約数和(自身を除く): 23999120908

約数列:

[1, 2, 4, 7, 14, 19, 28, 31, 38, 62, 76, 124, 133, 217, 266, 434, 532, 589, 868, 1178, 2356, 4123, 8246, 16492, 1240391, 2480782, 4961564, 8682737, 17365474, 23567429, 34730948, 38452121, 47134858, 76904242, 94269716, 153808484, 164972003, 269164847, 329944006, 538329694, 659888012, 730590299, 1076659388, 1461180598, 2922361196, 5114132093, 10228264186, 20456528372]

約数ペア:

[(1, 20456528372), (2, 10228264186), (4, 5114132093), (7, 2922361196), (14, 1461180598), (19, 1076659388), (28, 730590299), (31, 659888012), (38, 538329694), (62, 329944006), (76, 269164847), (124, 164972003), (133, 153808484), (217, 94269716), (266, 76904242), (434, 47134858), (532, 38452121), (589, 34730948), (868, 23567429), (1178, 17365474), (2356, 8682737), (4123, 4961564), (8246, 2480782), (16492, 1240391)]