199907995

素因数分解:

$5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{26321}}^1$

素因数の和:26371

約数の個数: 24

約数和(自身を含む): 288067968

約数和(自身を除く): 88159973

約数列:

[1, 5, 7, 31, 35, 49, 155, 217, 245, 1085, 1519, 7595, 26321, 131605, 184247, 815951, 921235, 1289729, 4079755, 5711657, 6448645, 28558285, 39981599, 199907995]

約数ペア:

[(1, 199907995), (5, 39981599), (7, 28558285), (31, 6448645), (35, 5711657), (49, 4079755), (155, 1289729), (217, 921235), (245, 815951), (1085, 184247), (1519, 131605), (7595, 26321)]