20516704

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{331}}^1$

素因数の和:503

約数の個数: 48

約数和(自身を含む): 43923600

約数和(自身を除く): 23406896

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 104, 149, 208, 298, 331, 416, 596, 662, 1192, 1324, 1937, 2384, 2648, 3874, 4303, 4768, 5296, 7748, 8606, 10592, 15496, 17212, 30992, 34424, 49319, 61984, 68848, 98638, 137696, 197276, 394552, 641147, 789104, 1282294, 1578208, 2564588, 5129176, 10258352, 20516704]

約数ペア:

[(1, 20516704), (2, 10258352), (4, 5129176), (8, 2564588), (13, 1578208), (16, 1282294), (26, 789104), (32, 641147), (52, 394552), (104, 197276), (149, 137696), (208, 98638), (298, 68848), (331, 61984), (416, 49319), (596, 34424), (662, 30992), (1192, 17212), (1324, 15496), (1937, 10592), (2384, 8606), (2648, 7748), (3874, 5296), (4303, 4768)]