828160

素因数分解:

$2^8\times 5^1\times {\mathrm{647}}^1$

素因数の和:668

約数の個数: 36

約数和(自身を含む): 1986768

約数和(自身を除く): 1158608

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 647, 1280, 1294, 2588, 3235, 5176, 6470, 10352, 12940, 20704, 25880, 41408, 51760, 82816, 103520, 165632, 207040, 414080, 828160]

約数ペア:

[(1, 828160), (2, 414080), (4, 207040), (5, 165632), (8, 103520), (10, 82816), (16, 51760), (20, 41408), (32, 25880), (40, 20704), (64, 12940), (80, 10352), (128, 6470), (160, 5176), (256, 3235), (320, 2588), (640, 1294), (647, 1280)]