207831620

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{199}}^1\times {\mathrm{661}}^1$

素因数の和:948

約数の個数: 48

約数和(自身を含む): 444864000

約数和(自身を除く): 237032380

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 199, 316, 395, 398, 661, 790, 796, 995, 1322, 1580, 1990, 2644, 3305, 3980, 6610, 13220, 15721, 31442, 52219, 62884, 78605, 104438, 131539, 157210, 208876, 261095, 263078, 314420, 522190, 526156, 657695, 1044380, 1315390, 2630780, 10391581, 20783162, 41566324, 51957905, 103915810, 207831620]

約数ペア:

[(1, 207831620), (2, 103915810), (4, 51957905), (5, 41566324), (10, 20783162), (20, 10391581), (79, 2630780), (158, 1315390), (199, 1044380), (316, 657695), (395, 526156), (398, 522190), (661, 314420), (790, 263078), (796, 261095), (995, 208876), (1322, 157210), (1580, 131539), (1990, 104438), (2644, 78605), (3305, 62884), (3980, 52219), (6610, 31442), (13220, 15721)]