84978160

素因数分解:

$2^4\times 5^1\times {\mathrm{661}}^1\times {\mathrm{1607}}^1$

素因数の和:2281

約数の個数: 40

約数和(自身を含む): 197996256

約数和(自身を除く): 113018096

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 661, 1322, 1607, 2644, 3214, 3305, 5288, 6428, 6610, 8035, 10576, 12856, 13220, 16070, 25712, 26440, 32140, 52880, 64280, 128560, 1062227, 2124454, 4248908, 5311135, 8497816, 10622270, 16995632, 21244540, 42489080, 84978160]

約数ペア:

[(1, 84978160), (2, 42489080), (4, 21244540), (5, 16995632), (8, 10622270), (10, 8497816), (16, 5311135), (20, 4248908), (40, 2124454), (80, 1062227), (661, 128560), (1322, 64280), (1607, 52880), (2644, 32140), (3214, 26440), (3305, 25712), (5288, 16070), (6428, 13220), (6610, 12856), (8035, 10576)]