28141380

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{1979}}^1$

素因数の和:2073

約数の個数: 72

約数和(自身を含む): 86486400

約数和(自身を除く): 58345020

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 79, 90, 158, 180, 237, 316, 395, 474, 711, 790, 948, 1185, 1422, 1580, 1979, 2370, 2844, 3555, 3958, 4740, 5937, 7110, 7916, 9895, 11874, 14220, 17811, 19790, 23748, 29685, 35622, 39580, 59370, 71244, 89055, 118740, 156341, 178110, 312682, 356220, 469023, 625364, 781705, 938046, 1407069, 1563410, 1876092, 2345115, 2814138, 3126820, 4690230, 5628276, 7035345, 9380460, 14070690, 28141380]

約数ペア:

[(1, 28141380), (2, 14070690), (3, 9380460), (4, 7035345), (5, 5628276), (6, 4690230), (9, 3126820), (10, 2814138), (12, 2345115), (15, 1876092), (18, 1563410), (20, 1407069), (30, 938046), (36, 781705), (45, 625364), (60, 469023), (79, 356220), (90, 312682), (158, 178110), (180, 156341), (237, 118740), (316, 89055), (395, 71244), (474, 59370), (711, 39580), (790, 35622), (948, 29685), (1185, 23748), (1422, 19790), (1580, 17811), (1979, 14220), (2370, 11874), (2844, 9895), (3555, 7916), (3958, 7110), (4740, 5937)]