638841609

素因数分解:

$3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{349667}}^1$

素因数の和:349709

約数の個数: 24

約数和(自身を含む): 1090964160

約数和(自身を除く): 452122551

約数列:

[1, 3, 7, 9, 21, 29, 63, 87, 203, 261, 609, 1827, 349667, 1049001, 2447669, 3147003, 7343007, 10140343, 22029021, 30421029, 70982401, 91263087, 212947203, 638841609]

約数ペア:

[(1, 638841609), (3, 212947203), (7, 91263087), (9, 70982401), (21, 30421029), (29, 22029021), (63, 10140343), (87, 7343007), (203, 3147003), (261, 2447669), (609, 1049001), (1827, 349667)]