1287040

素因数分解:

$2^7\times 5^1\times {\mathrm{2011}}^1$

素因数の和:2030

約数の個数: 32

約数和(自身を含む): 3078360

約数和(自身を除く): 1791320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 2011, 4022, 8044, 10055, 16088, 20110, 32176, 40220, 64352, 80440, 128704, 160880, 257408, 321760, 643520, 1287040]

約数ペア:

[(1, 1287040), (2, 643520), (4, 321760), (5, 257408), (8, 160880), (10, 128704), (16, 80440), (20, 64352), (32, 40220), (40, 32176), (64, 20110), (80, 16088), (128, 10055), (160, 8044), (320, 4022), (640, 2011)]