391496920

素因数分解:

$2^3\times 5^1\times {\mathrm{1301}}^1\times {\mathrm{7523}}^1$

素因数の和:8835

約数の個数: 32

約数和(自身を含む): 881662320

約数和(自身を除く): 490165400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1301, 2602, 5204, 6505, 7523, 10408, 13010, 15046, 26020, 30092, 37615, 52040, 60184, 75230, 150460, 300920, 9787423, 19574846, 39149692, 48937115, 78299384, 97874230, 195748460, 391496920]

約数ペア:

[(1, 391496920), (2, 195748460), (4, 97874230), (5, 78299384), (8, 48937115), (10, 39149692), (20, 19574846), (40, 9787423), (1301, 300920), (2602, 150460), (5204, 75230), (6505, 60184), (7523, 52040), (10408, 37615), (13010, 30092), (15046, 26020)]