640001466

素因数分解:

$2^1\times 3^3\times {\mathrm{13}}^1\times {\mathrm{911683}}^1$

素因数の和:911707

約数の個数: 32

約数和(自身を含む): 1531629120

約数和(自身を除く): 891627654

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 27, 39, 54, 78, 117, 234, 351, 702, 911683, 1823366, 2735049, 5470098, 8205147, 11851879, 16410294, 23703758, 24615441, 35555637, 49230882, 71111274, 106666911, 213333822, 320000733, 640001466]

約数ペア:

[(1, 640001466), (2, 320000733), (3, 213333822), (6, 106666911), (9, 71111274), (13, 49230882), (18, 35555637), (26, 24615441), (27, 23703758), (39, 16410294), (54, 11851879), (78, 8205147), (117, 5470098), (234, 2735049), (351, 1823366), (702, 911683)]