638604850

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{839}}^1\times {\mathrm{1171}}^1$

素因数の和:2035

約数の個数: 48

約数和(自身を含む): 1281792960

約数和(自身を除く): 643188110

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 130, 325, 650, 839, 1171, 1678, 2342, 4195, 5855, 8390, 10907, 11710, 15223, 20975, 21814, 29275, 30446, 41950, 54535, 58550, 76115, 109070, 152230, 272675, 380575, 545350, 761150, 982469, 1964938, 4912345, 9824690, 12772097, 24561725, 25544194, 49123450, 63860485, 127720970, 319302425, 638604850]

約数ペア:

[(1, 638604850), (2, 319302425), (5, 127720970), (10, 63860485), (13, 49123450), (25, 25544194), (26, 24561725), (50, 12772097), (65, 9824690), (130, 4912345), (325, 1964938), (650, 982469), (839, 761150), (1171, 545350), (1678, 380575), (2342, 272675), (4195, 152230), (5855, 109070), (8390, 76115), (10907, 58550), (11710, 54535), (15223, 41950), (20975, 30446), (21814, 29275)]