20579741

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{251}}^1$

素因数の和:341

約数の個数: 32

約数和(自身を含む): 27433728

約数和(自身を除く): 6853987

約数列:

[1, 7, 13, 17, 53, 91, 119, 221, 251, 371, 689, 901, 1547, 1757, 3263, 4267, 4823, 6307, 11713, 13303, 22841, 29869, 55471, 81991, 93121, 172939, 226151, 388297, 1210573, 1583057, 2939963, 20579741]

約数ペア:

[(1, 20579741), (7, 2939963), (13, 1583057), (17, 1210573), (53, 388297), (91, 226151), (119, 172939), (221, 93121), (251, 81991), (371, 55471), (689, 29869), (901, 22841), (1547, 13303), (1757, 11713), (3263, 6307), (4267, 4823)]