4080640

素因数分解:

$2^{10}\times 5^1\times {\mathrm{797}}^1$

素因数の和:822

約数の個数: 44

約数和(自身を含む): 9801036

約数和(自身を除く): 5720396

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 797, 1024, 1280, 1594, 2560, 3188, 3985, 5120, 6376, 7970, 12752, 15940, 25504, 31880, 51008, 63760, 102016, 127520, 204032, 255040, 408064, 510080, 816128, 1020160, 2040320, 4080640]

約数ペア:

[(1, 4080640), (2, 2040320), (4, 1020160), (5, 816128), (8, 510080), (10, 408064), (16, 255040), (20, 204032), (32, 127520), (40, 102016), (64, 63760), (80, 51008), (128, 31880), (160, 25504), (256, 15940), (320, 12752), (512, 7970), (640, 6376), (797, 5120), (1024, 3985), (1280, 3188), (1594, 2560)]