20565404885

素因数分解:

$5^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1\times {\mathrm{491}}^1\times {\mathrm{1543}}^1$

素因数の和:2189

約数の個数: 32

約数和(自身を含む): 25433015040

約数和(自身を除く): 4867610155

約数列:

[1, 5, 61, 89, 305, 445, 491, 1543, 2455, 5429, 7715, 27145, 29951, 43699, 94123, 137327, 149755, 218495, 470615, 686635, 757613, 2665639, 3788065, 8376947, 13328195, 41884735, 46214393, 67427557, 231071965, 337137785, 4113080977, 20565404885]

約数ペア:

[(1, 20565404885), (5, 4113080977), (61, 337137785), (89, 231071965), (305, 67427557), (445, 46214393), (491, 41884735), (1543, 13328195), (2455, 8376947), (5429, 3788065), (7715, 2665639), (27145, 757613), (29951, 686635), (43699, 470615), (94123, 218495), (137327, 149755)]