91020920

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{23459}}^1$

素因数の和:23567

約数の個数: 32

約数和(自身を含む): 206917200

約数和(自身を除く): 115896280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 485, 776, 970, 1940, 3880, 23459, 46918, 93836, 117295, 187672, 234590, 469180, 938360, 2275523, 4551046, 9102092, 11377615, 18204184, 22755230, 45510460, 91020920]

約数ペア:

[(1, 91020920), (2, 45510460), (4, 22755230), (5, 18204184), (8, 11377615), (10, 9102092), (20, 4551046), (40, 2275523), (97, 938360), (194, 469180), (388, 234590), (485, 187672), (776, 117295), (970, 93836), (1940, 46918), (3880, 23459)]