8241280

素因数分解:

$2^7\times 5^1\times {\mathrm{79}}^1\times {\mathrm{163}}^1$

素因数の和:261

約数の個数: 64

約数和(自身を含む): 20073600

約数和(自身を除く): 11832320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 79, 80, 128, 158, 160, 163, 316, 320, 326, 395, 632, 640, 652, 790, 815, 1264, 1304, 1580, 1630, 2528, 2608, 3160, 3260, 5056, 5216, 6320, 6520, 10112, 10432, 12640, 12877, 13040, 20864, 25280, 25754, 26080, 50560, 51508, 52160, 64385, 103016, 104320, 128770, 206032, 257540, 412064, 515080, 824128, 1030160, 1648256, 2060320, 4120640, 8241280]

約数ペア:

[(1, 8241280), (2, 4120640), (4, 2060320), (5, 1648256), (8, 1030160), (10, 824128), (16, 515080), (20, 412064), (32, 257540), (40, 206032), (64, 128770), (79, 104320), (80, 103016), (128, 64385), (158, 52160), (160, 51508), (163, 50560), (316, 26080), (320, 25754), (326, 25280), (395, 20864), (632, 13040), (640, 12877), (652, 12640), (790, 10432), (815, 10112), (1264, 6520), (1304, 6320), (1580, 5216), (1630, 5056), (2528, 3260), (2608, 3160)]