280804580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{2005747}}^1$

素因数の和:2005763

約数の個数: 24

約数和(自身を含む): 673931328

約数和(自身を除く): 393126748

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 2005747, 4011494, 8022988, 10028735, 14040229, 20057470, 28080458, 40114940, 56160916, 70201145, 140402290, 280804580]

約数ペア:

[(1, 280804580), (2, 140402290), (4, 70201145), (5, 56160916), (7, 40114940), (10, 28080458), (14, 20057470), (20, 14040229), (28, 10028735), (35, 8022988), (70, 4011494), (140, 2005747)]