21850000

素因数分解:

$2^4\times 5^5\times {\mathrm{19}}^1\times {\mathrm{23}}^1$

素因数の和:75

約数の個数: 120

約数和(自身を含む): 58121280

約数和(自身を除く): 36271280

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 23, 25, 38, 40, 46, 50, 76, 80, 92, 95, 100, 115, 125, 152, 184, 190, 200, 230, 250, 304, 368, 380, 400, 437, 460, 475, 500, 575, 625, 760, 874, 920, 950, 1000, 1150, 1250, 1520, 1748, 1840, 1900, 2000, 2185, 2300, 2375, 2500, 2875, 3125, 3496, 3800, 4370, 4600, 4750, 5000, 5750, 6250, 6992, 7600, 8740, 9200, 9500, 10000, 10925, 11500, 11875, 12500, 14375, 17480, 19000, 21850, 23000, 23750, 25000, 28750, 34960, 38000, 43700, 46000, 47500, 50000, 54625, 57500, 59375, 71875, 87400, 95000, 109250, 115000, 118750, 143750, 174800, 190000, 218500, 230000, 237500, 273125, 287500, 437000, 475000, 546250, 575000, 874000, 950000, 1092500, 1150000, 1365625, 2185000, 2731250, 4370000, 5462500, 10925000, 21850000]

約数ペア:

[(1, 21850000), (2, 10925000), (4, 5462500), (5, 4370000), (8, 2731250), (10, 2185000), (16, 1365625), (19, 1150000), (20, 1092500), (23, 950000), (25, 874000), (38, 575000), (40, 546250), (46, 475000), (50, 437000), (76, 287500), (80, 273125), (92, 237500), (95, 230000), (100, 218500), (115, 190000), (125, 174800), (152, 143750), (184, 118750), (190, 115000), (200, 109250), (230, 95000), (250, 87400), (304, 71875), (368, 59375), (380, 57500), (400, 54625), (437, 50000), (460, 47500), (475, 46000), (500, 43700), (575, 38000), (625, 34960), (760, 28750), (874, 25000), (920, 23750), (950, 23000), (1000, 21850), (1150, 19000), (1250, 17480), (1520, 14375), (1748, 12500), (1840, 11875), (1900, 11500), (2000, 10925), (2185, 10000), (2300, 9500), (2375, 9200), (2500, 8740), (2875, 7600), (3125, 6992), (3496, 6250), (3800, 5750), (4370, 5000), (4600, 4750)]