21741580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{1601}}^1$

素因数の和:1714

約数の個数: 48

約数和(自身を含む): 52750656

約数和(自身を除く): 31009076

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 97, 140, 194, 388, 485, 679, 970, 1358, 1601, 1940, 2716, 3202, 3395, 6404, 6790, 8005, 11207, 13580, 16010, 22414, 32020, 44828, 56035, 112070, 155297, 224140, 310594, 621188, 776485, 1087079, 1552970, 2174158, 3105940, 4348316, 5435395, 10870790, 21741580]

約数ペア:

[(1, 21741580), (2, 10870790), (4, 5435395), (5, 4348316), (7, 3105940), (10, 2174158), (14, 1552970), (20, 1087079), (28, 776485), (35, 621188), (70, 310594), (97, 224140), (140, 155297), (194, 112070), (388, 56035), (485, 44828), (679, 32020), (970, 22414), (1358, 16010), (1601, 13580), (1940, 11207), (2716, 8005), (3202, 6790), (3395, 6404)]