205420500

素因数分解:

$2^2\times 3^2\times 5^3\times {\mathrm{191}}^1\times {\mathrm{239}}^1$

素因数の和:455

約数の個数: 144

約数和(自身を含む): 654151680

約数和(自身を除く): 448731180

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 25, 30, 36, 45, 50, 60, 75, 90, 100, 125, 150, 180, 191, 225, 239, 250, 300, 375, 382, 450, 478, 500, 573, 717, 750, 764, 900, 955, 956, 1125, 1146, 1195, 1434, 1500, 1719, 1910, 2151, 2250, 2292, 2390, 2865, 2868, 3438, 3585, 3820, 4302, 4500, 4775, 4780, 5730, 5975, 6876, 7170, 8595, 8604, 9550, 10755, 11460, 11950, 14325, 14340, 17190, 17925, 19100, 21510, 23875, 23900, 28650, 29875, 34380, 35850, 42975, 43020, 45649, 47750, 53775, 57300, 59750, 71625, 71700, 85950, 89625, 91298, 95500, 107550, 119500, 136947, 143250, 171900, 179250, 182596, 214875, 215100, 228245, 268875, 273894, 286500, 358500, 410841, 429750, 456490, 537750, 547788, 684735, 821682, 859500, 912980, 1075500, 1141225, 1369470, 1643364, 2054205, 2282450, 2738940, 3423675, 4108410, 4564900, 5706125, 6847350, 8216820, 10271025, 11412250, 13694700, 17118375, 20542050, 22824500, 34236750, 41084100, 51355125, 68473500, 102710250, 205420500]

約数ペア:

[(1, 205420500), (2, 102710250), (3, 68473500), (4, 51355125), (5, 41084100), (6, 34236750), (9, 22824500), (10, 20542050), (12, 17118375), (15, 13694700), (18, 11412250), (20, 10271025), (25, 8216820), (30, 6847350), (36, 5706125), (45, 4564900), (50, 4108410), (60, 3423675), (75, 2738940), (90, 2282450), (100, 2054205), (125, 1643364), (150, 1369470), (180, 1141225), (191, 1075500), (225, 912980), (239, 859500), (250, 821682), (300, 684735), (375, 547788), (382, 537750), (450, 456490), (478, 429750), (500, 410841), (573, 358500), (717, 286500), (750, 273894), (764, 268875), (900, 228245), (955, 215100), (956, 214875), (1125, 182596), (1146, 179250), (1195, 171900), (1434, 143250), (1500, 136947), (1719, 119500), (1910, 107550), (2151, 95500), (2250, 91298), (2292, 89625), (2390, 85950), (2865, 71700), (2868, 71625), (3438, 59750), (3585, 57300), (3820, 53775), (4302, 47750), (4500, 45649), (4775, 43020), (4780, 42975), (5730, 35850), (5975, 34380), (6876, 29875), (7170, 28650), (8595, 23900), (8604, 23875), (9550, 21510), (10755, 19100), (11460, 17925), (11950, 17190), (14325, 14340)]