19909728

素因数分解:

$2^5\times 3^2\times {\mathrm{73}}^1\times {\mathrm{947}}^1$

素因数の和:1036

約数の個数: 72

約数和(自身を含む): 57454488

約数和(自身を除く): 37544760

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 72, 73, 96, 144, 146, 219, 288, 292, 438, 584, 657, 876, 947, 1168, 1314, 1752, 1894, 2336, 2628, 2841, 3504, 3788, 5256, 5682, 7008, 7576, 8523, 10512, 11364, 15152, 17046, 21024, 22728, 30304, 34092, 45456, 68184, 69131, 90912, 136368, 138262, 207393, 272736, 276524, 414786, 553048, 622179, 829572, 1106096, 1244358, 1659144, 2212192, 2488716, 3318288, 4977432, 6636576, 9954864, 19909728]

約数ペア:

[(1, 19909728), (2, 9954864), (3, 6636576), (4, 4977432), (6, 3318288), (8, 2488716), (9, 2212192), (12, 1659144), (16, 1244358), (18, 1106096), (24, 829572), (32, 622179), (36, 553048), (48, 414786), (72, 276524), (73, 272736), (96, 207393), (144, 138262), (146, 136368), (219, 90912), (288, 69131), (292, 68184), (438, 45456), (584, 34092), (657, 30304), (876, 22728), (947, 21024), (1168, 17046), (1314, 15152), (1752, 11364), (1894, 10512), (2336, 8523), (2628, 7576), (2841, 7008), (3504, 5682), (3788, 5256)]