20805000

素因数分解:

$2^3\times 3^1\times 5^4\times {\mathrm{19}}^1\times {\mathrm{73}}^1$

素因数の和:121

約数の個数: 160

約数和(自身を含む): 69352800

約数和(自身を除く): 48547800

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 19, 20, 24, 25, 30, 38, 40, 50, 57, 60, 73, 75, 76, 95, 100, 114, 120, 125, 146, 150, 152, 190, 200, 219, 228, 250, 285, 292, 300, 365, 375, 380, 438, 456, 475, 500, 570, 584, 600, 625, 730, 750, 760, 876, 950, 1000, 1095, 1140, 1250, 1387, 1425, 1460, 1500, 1752, 1825, 1875, 1900, 2190, 2280, 2375, 2500, 2774, 2850, 2920, 3000, 3650, 3750, 3800, 4161, 4380, 4750, 5000, 5475, 5548, 5700, 6935, 7125, 7300, 7500, 8322, 8760, 9125, 9500, 10950, 11096, 11400, 11875, 13870, 14250, 14600, 15000, 16644, 18250, 19000, 20805, 21900, 23750, 27375, 27740, 28500, 33288, 34675, 35625, 36500, 41610, 43800, 45625, 47500, 54750, 55480, 57000, 69350, 71250, 73000, 83220, 91250, 95000, 104025, 109500, 136875, 138700, 142500, 166440, 173375, 182500, 208050, 219000, 273750, 277400, 285000, 346750, 365000, 416100, 520125, 547500, 693500, 832200, 866875, 1040250, 1095000, 1387000, 1733750, 2080500, 2600625, 3467500, 4161000, 5201250, 6935000, 10402500, 20805000]

約数ペア:

[(1, 20805000), (2, 10402500), (3, 6935000), (4, 5201250), (5, 4161000), (6, 3467500), (8, 2600625), (10, 2080500), (12, 1733750), (15, 1387000), (19, 1095000), (20, 1040250), (24, 866875), (25, 832200), (30, 693500), (38, 547500), (40, 520125), (50, 416100), (57, 365000), (60, 346750), (73, 285000), (75, 277400), (76, 273750), (95, 219000), (100, 208050), (114, 182500), (120, 173375), (125, 166440), (146, 142500), (150, 138700), (152, 136875), (190, 109500), (200, 104025), (219, 95000), (228, 91250), (250, 83220), (285, 73000), (292, 71250), (300, 69350), (365, 57000), (375, 55480), (380, 54750), (438, 47500), (456, 45625), (475, 43800), (500, 41610), (570, 36500), (584, 35625), (600, 34675), (625, 33288), (730, 28500), (750, 27740), (760, 27375), (876, 23750), (950, 21900), (1000, 20805), (1095, 19000), (1140, 18250), (1250, 16644), (1387, 15000), (1425, 14600), (1460, 14250), (1500, 13870), (1752, 11875), (1825, 11400), (1875, 11096), (1900, 10950), (2190, 9500), (2280, 9125), (2375, 8760), (2500, 8322), (2774, 7500), (2850, 7300), (2920, 7125), (3000, 6935), (3650, 5700), (3750, 5548), (3800, 5475), (4161, 5000), (4380, 4750)]