21294080

素因数分解:

$2^{10}\times 5^1\times {\mathrm{4159}}^1$

素因数の和:4184

約数の個数: 44

約数和(自身を含む): 51093120

約数和(自身を除く): 29799040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1280, 2560, 4159, 5120, 8318, 16636, 20795, 33272, 41590, 66544, 83180, 133088, 166360, 266176, 332720, 532352, 665440, 1064704, 1330880, 2129408, 2661760, 4258816, 5323520, 10647040, 21294080]

約数ペア:

[(1, 21294080), (2, 10647040), (4, 5323520), (5, 4258816), (8, 2661760), (10, 2129408), (16, 1330880), (20, 1064704), (32, 665440), (40, 532352), (64, 332720), (80, 266176), (128, 166360), (160, 133088), (256, 83180), (320, 66544), (512, 41590), (640, 33272), (1024, 20795), (1280, 16636), (2560, 8318), (4159, 5120)]