20807868965

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{541}}^1\times {\mathrm{1979}}^1$

素因数の和:2574

約数の個数: 48

約数和(自身を含む): 28279912320

約数和(自身を除く): 7472043355

約数列:

[1, 5, 13, 23, 65, 115, 169, 299, 541, 845, 1495, 1979, 2705, 3887, 7033, 9895, 12443, 19435, 25727, 35165, 45517, 62215, 91429, 128635, 161759, 227585, 334451, 457145, 591721, 808795, 1070639, 1672255, 2102867, 2958605, 5353195, 7692373, 10514335, 13918307, 24624697, 38461865, 69591535, 123123485, 180937991, 320121061, 904689955, 1600605305, 4161573793, 20807868965]

約数ペア:

[(1, 20807868965), (5, 4161573793), (13, 1600605305), (23, 904689955), (65, 320121061), (115, 180937991), (169, 123123485), (299, 69591535), (541, 38461865), (845, 24624697), (1495, 13918307), (1979, 10514335), (2705, 7692373), (3887, 5353195), (7033, 2958605), (9895, 2102867), (12443, 1672255), (19435, 1070639), (25727, 808795), (35165, 591721), (45517, 457145), (62215, 334451), (91429, 227585), (128635, 161759)]