21470000

素因数分解:

$2^4\times 5^4\times {\mathrm{19}}^1\times {\mathrm{113}}^1$

素因数の和:160

約数の個数: 100

約数和(自身を含む): 55201080

約数和(自身を除く): 33731080

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 25, 38, 40, 50, 76, 80, 95, 100, 113, 125, 152, 190, 200, 226, 250, 304, 380, 400, 452, 475, 500, 565, 625, 760, 904, 950, 1000, 1130, 1250, 1520, 1808, 1900, 2000, 2147, 2260, 2375, 2500, 2825, 3800, 4294, 4520, 4750, 5000, 5650, 7600, 8588, 9040, 9500, 10000, 10735, 11300, 11875, 14125, 17176, 19000, 21470, 22600, 23750, 28250, 34352, 38000, 42940, 45200, 47500, 53675, 56500, 70625, 85880, 95000, 107350, 113000, 141250, 171760, 190000, 214700, 226000, 268375, 282500, 429400, 536750, 565000, 858800, 1073500, 1130000, 1341875, 2147000, 2683750, 4294000, 5367500, 10735000, 21470000]

約数ペア:

[(1, 21470000), (2, 10735000), (4, 5367500), (5, 4294000), (8, 2683750), (10, 2147000), (16, 1341875), (19, 1130000), (20, 1073500), (25, 858800), (38, 565000), (40, 536750), (50, 429400), (76, 282500), (80, 268375), (95, 226000), (100, 214700), (113, 190000), (125, 171760), (152, 141250), (190, 113000), (200, 107350), (226, 95000), (250, 85880), (304, 70625), (380, 56500), (400, 53675), (452, 47500), (475, 45200), (500, 42940), (565, 38000), (625, 34352), (760, 28250), (904, 23750), (950, 22600), (1000, 21470), (1130, 19000), (1250, 17176), (1520, 14125), (1808, 11875), (1900, 11300), (2000, 10735), (2147, 10000), (2260, 9500), (2375, 9040), (2500, 8588), (2825, 7600), (3800, 5650), (4294, 5000), (4520, 4750)]