28364980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^2\times {\mathrm{383}}^1$

素因数の和:445

約数の個数: 72

約数和(自身を含む): 71350272

約数和(自身を除く): 42985292

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 70, 92, 115, 140, 161, 230, 322, 383, 460, 529, 644, 766, 805, 1058, 1532, 1610, 1915, 2116, 2645, 2681, 3220, 3703, 3830, 5290, 5362, 7406, 7660, 8809, 10580, 10724, 13405, 14812, 17618, 18515, 26810, 35236, 37030, 44045, 53620, 61663, 74060, 88090, 123326, 176180, 202607, 246652, 308315, 405214, 616630, 810428, 1013035, 1233260, 1418249, 2026070, 2836498, 4052140, 5672996, 7091245, 14182490, 28364980]

約数ペア:

[(1, 28364980), (2, 14182490), (4, 7091245), (5, 5672996), (7, 4052140), (10, 2836498), (14, 2026070), (20, 1418249), (23, 1233260), (28, 1013035), (35, 810428), (46, 616630), (70, 405214), (92, 308315), (115, 246652), (140, 202607), (161, 176180), (230, 123326), (322, 88090), (383, 74060), (460, 61663), (529, 53620), (644, 44045), (766, 37030), (805, 35236), (1058, 26810), (1532, 18515), (1610, 17618), (1915, 14812), (2116, 13405), (2645, 10724), (2681, 10580), (3220, 8809), (3703, 7660), (3830, 7406), (5290, 5362)]