21462880

素因数分解:

$2^5\times 5^1\times {\mathrm{53}}^1\times {\mathrm{2531}}^1$

素因数の和:2599

約数の個数: 48

約数和(自身を含む): 51683184

約数和(自身を除く): 30220304

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 53, 80, 106, 160, 212, 265, 424, 530, 848, 1060, 1696, 2120, 2531, 4240, 5062, 8480, 10124, 12655, 20248, 25310, 40496, 50620, 80992, 101240, 134143, 202480, 268286, 404960, 536572, 670715, 1073144, 1341430, 2146288, 2682860, 4292576, 5365720, 10731440, 21462880]

約数ペア:

[(1, 21462880), (2, 10731440), (4, 5365720), (5, 4292576), (8, 2682860), (10, 2146288), (16, 1341430), (20, 1073144), (32, 670715), (40, 536572), (53, 404960), (80, 268286), (106, 202480), (160, 134143), (212, 101240), (265, 80992), (424, 50620), (530, 40496), (848, 25310), (1060, 20248), (1696, 12655), (2120, 10124), (2531, 8480), (4240, 5062)]