21647072

素因数分解:

$2^5\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{389}}^1$

素因数の和:483

約数の個数: 48

約数和(自身を含む): 44815680

約数和(自身を除く): 23168608

約数列:

[1, 2, 4, 8, 16, 32, 37, 47, 74, 94, 148, 188, 296, 376, 389, 592, 752, 778, 1184, 1504, 1556, 1739, 3112, 3478, 6224, 6956, 12448, 13912, 14393, 18283, 27824, 28786, 36566, 55648, 57572, 73132, 115144, 146264, 230288, 292528, 460576, 585056, 676471, 1352942, 2705884, 5411768, 10823536, 21647072]

約数ペア:

[(1, 21647072), (2, 10823536), (4, 5411768), (8, 2705884), (16, 1352942), (32, 676471), (37, 585056), (47, 460576), (74, 292528), (94, 230288), (148, 146264), (188, 115144), (296, 73132), (376, 57572), (389, 55648), (592, 36566), (752, 28786), (778, 27824), (1184, 18283), (1504, 14393), (1556, 13912), (1739, 12448), (3112, 6956), (3478, 6224)]