205278320

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{197383}}^1$

素因数の和:197409

約数の個数: 40

約数和(自身を含む): 513987936

約数和(自身を除く): 308709616

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 197383, 394766, 789532, 986915, 1579064, 1973830, 2565979, 3158128, 3947660, 5131958, 7895320, 10263916, 12829895, 15790640, 20527832, 25659790, 41055664, 51319580, 102639160, 205278320]

約数ペア:

[(1, 205278320), (2, 102639160), (4, 51319580), (5, 41055664), (8, 25659790), (10, 20527832), (13, 15790640), (16, 12829895), (20, 10263916), (26, 7895320), (40, 5131958), (52, 3947660), (65, 3158128), (80, 2565979), (104, 1973830), (130, 1579064), (208, 986915), (260, 789532), (520, 394766), (1040, 197383)]