20816654080

素因数分解:

$2^8\times 5^1\times {\mathrm{16263011}}^1$

素因数の和:16263032

約数の個数: 36

約数和(自身を含む): 49862394792

約数和(自身を除く): 29045740712

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 16263011, 32526022, 65052044, 81315055, 130104088, 162630110, 260208176, 325260220, 520416352, 650520440, 1040832704, 1301040880, 2081665408, 2602081760, 4163330816, 5204163520, 10408327040, 20816654080]

約数ペア:

[(1, 20816654080), (2, 10408327040), (4, 5204163520), (5, 4163330816), (8, 2602081760), (10, 2081665408), (16, 1301040880), (20, 1040832704), (32, 650520440), (40, 520416352), (64, 325260220), (80, 260208176), (128, 162630110), (160, 130104088), (256, 81315055), (320, 65052044), (640, 32526022), (1280, 16263011)]