81825320

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{21089}}^1$

素因数の和:21197

約数の個数: 32

約数和(自身を含む): 186013800

約数和(自身を除く): 104188480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 485, 776, 970, 1940, 3880, 21089, 42178, 84356, 105445, 168712, 210890, 421780, 843560, 2045633, 4091266, 8182532, 10228165, 16365064, 20456330, 40912660, 81825320]

約数ペア:

[(1, 81825320), (2, 40912660), (4, 20456330), (5, 16365064), (8, 10228165), (10, 8182532), (20, 4091266), (40, 2045633), (97, 843560), (194, 421780), (388, 210890), (485, 168712), (776, 105445), (970, 84356), (1940, 42178), (3880, 21089)]