20738835

素因数分解:

$3^5\times 5^1\times {\mathrm{13}}^2\times {\mathrm{101}}^1$

素因数の和:147

約数の個数: 72

約数和(自身を含む): 40766544

約数和(自身を除く): 20027709

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 45, 65, 81, 101, 117, 135, 169, 195, 243, 303, 351, 405, 505, 507, 585, 845, 909, 1053, 1215, 1313, 1515, 1521, 1755, 2535, 2727, 3159, 3939, 4545, 4563, 5265, 6565, 7605, 8181, 11817, 13635, 13689, 15795, 17069, 19695, 22815, 24543, 35451, 40905, 41067, 51207, 59085, 68445, 85345, 106353, 122715, 153621, 177255, 205335, 256035, 319059, 460863, 531765, 768105, 1382589, 1595295, 2304315, 4147767, 6912945, 20738835]

約数ペア:

[(1, 20738835), (3, 6912945), (5, 4147767), (9, 2304315), (13, 1595295), (15, 1382589), (27, 768105), (39, 531765), (45, 460863), (65, 319059), (81, 256035), (101, 205335), (117, 177255), (135, 153621), (169, 122715), (195, 106353), (243, 85345), (303, 68445), (351, 59085), (405, 51207), (505, 41067), (507, 40905), (585, 35451), (845, 24543), (909, 22815), (1053, 19695), (1215, 17069), (1313, 15795), (1515, 13689), (1521, 13635), (1755, 11817), (2535, 8181), (2727, 7605), (3159, 6565), (3939, 5265), (4545, 4563)]