21497518

素因数分解:

$2^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{883}}^1$

素因数の和:976

約数の個数: 32

約数和(自身を含む): 38697984

約数和(自身を除く): 17200466

約数列:

[1, 2, 7, 14, 37, 47, 74, 94, 259, 329, 518, 658, 883, 1739, 1766, 3478, 6181, 12173, 12362, 24346, 32671, 41501, 65342, 83002, 228697, 290507, 457394, 581014, 1535537, 3071074, 10748759, 21497518]

約数ペア:

[(1, 21497518), (2, 10748759), (7, 3071074), (14, 1535537), (37, 581014), (47, 457394), (74, 290507), (94, 228697), (259, 83002), (329, 65342), (518, 41501), (658, 32671), (883, 24346), (1739, 12362), (1766, 12173), (3478, 6181)]