1284280

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{331}}^1$

素因数の和:439

約数の個数: 32

約数和(自身を含む): 2928240

約数和(自身を除く): 1643960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 331, 388, 485, 662, 776, 970, 1324, 1655, 1940, 2648, 3310, 3880, 6620, 13240, 32107, 64214, 128428, 160535, 256856, 321070, 642140, 1284280]

約数ペア:

[(1, 1284280), (2, 642140), (4, 321070), (5, 256856), (8, 160535), (10, 128428), (20, 64214), (40, 32107), (97, 13240), (194, 6620), (331, 3880), (388, 3310), (485, 2648), (662, 1940), (776, 1655), (970, 1324)]