28821420

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{17791}}^1$

素因数の和:17812

約数の個数: 60

約数和(自身を含む): 90418944

約数和(自身を除く): 61597524

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 135, 162, 180, 270, 324, 405, 540, 810, 1620, 17791, 35582, 53373, 71164, 88955, 106746, 160119, 177910, 213492, 266865, 320238, 355820, 480357, 533730, 640476, 800595, 960714, 1067460, 1441071, 1601190, 1921428, 2401785, 2882142, 3202380, 4803570, 5764284, 7205355, 9607140, 14410710, 28821420]

約数ペア:

[(1, 28821420), (2, 14410710), (3, 9607140), (4, 7205355), (5, 5764284), (6, 4803570), (9, 3202380), (10, 2882142), (12, 2401785), (15, 1921428), (18, 1601190), (20, 1441071), (27, 1067460), (30, 960714), (36, 800595), (45, 640476), (54, 533730), (60, 480357), (81, 355820), (90, 320238), (108, 266865), (135, 213492), (162, 177910), (180, 160119), (270, 106746), (324, 88955), (405, 71164), (540, 53373), (810, 35582), (1620, 17791)]