21560320

素因数分解:

$2^{10}\times 5^1\times {\mathrm{4211}}^1$

素因数の和:4236

約数の個数: 44

約数和(自身を含む): 51731784

約数和(自身を除く): 30171464

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1280, 2560, 4211, 5120, 8422, 16844, 21055, 33688, 42110, 67376, 84220, 134752, 168440, 269504, 336880, 539008, 673760, 1078016, 1347520, 2156032, 2695040, 4312064, 5390080, 10780160, 21560320]

約数ペア:

[(1, 21560320), (2, 10780160), (4, 5390080), (5, 4312064), (8, 2695040), (10, 2156032), (16, 1347520), (20, 1078016), (32, 673760), (40, 539008), (64, 336880), (80, 269504), (128, 168440), (160, 134752), (256, 84220), (320, 67376), (512, 42110), (640, 33688), (1024, 21055), (1280, 16844), (2560, 8422), (4211, 5120)]