20403200

素因数分解:

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

素因数の和:827

約数の個数: 66

約数和(自身を含む): 50638686

約数和(自身を除く): 30235486

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 256, 320, 400, 512, 640, 797, 800, 1024, 1280, 1594, 1600, 2560, 3188, 3200, 3985, 5120, 6376, 6400, 7970, 12752, 12800, 15940, 19925, 25504, 25600, 31880, 39850, 51008, 63760, 79700, 102016, 127520, 159400, 204032, 255040, 318800, 408064, 510080, 637600, 816128, 1020160, 1275200, 2040320, 2550400, 4080640, 5100800, 10201600, 20403200]

約数ペア:

[(1, 20403200), (2, 10201600), (4, 5100800), (5, 4080640), (8, 2550400), (10, 2040320), (16, 1275200), (20, 1020160), (25, 816128), (32, 637600), (40, 510080), (50, 408064), (64, 318800), (80, 255040), (100, 204032), (128, 159400), (160, 127520), (200, 102016), (256, 79700), (320, 63760), (400, 51008), (512, 39850), (640, 31880), (797, 25600), (800, 25504), (1024, 19925), (1280, 15940), (1594, 12800), (1600, 12752), (2560, 7970), (3188, 6400), (3200, 6376), (3985, 5120)]