21453200

素因数分解:

$2^4\times 5^2\times {\mathrm{53633}}^1$

素因数の和:53651

約数の個数: 30

約数和(自身を含む): 51542274

約数和(自身を除く): 30089074

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 53633, 107266, 214532, 268165, 429064, 536330, 858128, 1072660, 1340825, 2145320, 2681650, 4290640, 5363300, 10726600, 21453200]

約数ペア:

[(1, 21453200), (2, 10726600), (4, 5363300), (5, 4290640), (8, 2681650), (10, 2145320), (16, 1340825), (20, 1072660), (25, 858128), (40, 536330), (50, 429064), (80, 268165), (100, 214532), (200, 107266), (400, 53633)]