12400780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{877}}^1$

素因数の和:994

約数の個数: 48

約数和(自身を含む): 30090816

約数和(自身を除く): 17690036

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 101, 140, 202, 404, 505, 707, 877, 1010, 1414, 1754, 2020, 2828, 3508, 3535, 4385, 6139, 7070, 8770, 12278, 14140, 17540, 24556, 30695, 61390, 88577, 122780, 177154, 354308, 442885, 620039, 885770, 1240078, 1771540, 2480156, 3100195, 6200390, 12400780]

約数ペア:

[(1, 12400780), (2, 6200390), (4, 3100195), (5, 2480156), (7, 1771540), (10, 1240078), (14, 885770), (20, 620039), (28, 442885), (35, 354308), (70, 177154), (101, 122780), (140, 88577), (202, 61390), (404, 30695), (505, 24556), (707, 17540), (877, 14140), (1010, 12278), (1414, 8770), (1754, 7070), (2020, 6139), (2828, 4385), (3508, 3535)]