254396920

素因数分解:

$2^3\times 5^1\times {\mathrm{491}}^1\times {\mathrm{12953}}^1$

素因数の和:13455

約数の個数: 32

約数和(自身を含む): 573603120

約数和(自身を除く): 319206200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 491, 982, 1964, 2455, 3928, 4910, 9820, 12953, 19640, 25906, 51812, 64765, 103624, 129530, 259060, 518120, 6359923, 12719846, 25439692, 31799615, 50879384, 63599230, 127198460, 254396920]

約数ペア:

[(1, 254396920), (2, 127198460), (4, 63599230), (5, 50879384), (8, 31799615), (10, 25439692), (20, 12719846), (40, 6359923), (491, 518120), (982, 259060), (1964, 129530), (2455, 103624), (3928, 64765), (4910, 51812), (9820, 25906), (12953, 19640)]