254020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{977}}^1$

素因数の和:999

約数の個数: 24

約数和(自身を含む): 575064

約数和(自身を除く): 321044

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 977, 1954, 3908, 4885, 9770, 12701, 19540, 25402, 50804, 63505, 127010, 254020]

約数ペア:

[(1, 254020), (2, 127010), (4, 63505), (5, 50804), (10, 25402), (13, 19540), (20, 12701), (26, 9770), (52, 4885), (65, 3908), (130, 1954), (260, 977)]