209874880

素因数分解:

$2^6\times 5^1\times {\mathrm{655859}}^1$

素因数の和:655876

約数の個数: 28

約数和(自身を含む): 499765320

約数和(自身を除く): 289890440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 655859, 1311718, 2623436, 3279295, 5246872, 6558590, 10493744, 13117180, 20987488, 26234360, 41974976, 52468720, 104937440, 209874880]

約数ペア:

[(1, 209874880), (2, 104937440), (4, 52468720), (5, 41974976), (8, 26234360), (10, 20987488), (16, 13117180), (20, 10493744), (32, 6558590), (40, 5246872), (64, 3279295), (80, 2623436), (160, 1311718), (320, 655859)]