20448160

素因数分解:

$2^5\times 5^1\times {\mathrm{227}}^1\times {\mathrm{563}}^1$

素因数の和:805

約数の個数: 48

約数和(自身を含む): 48607776

約数和(自身を除く): 28159616

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 227, 454, 563, 908, 1126, 1135, 1816, 2252, 2270, 2815, 3632, 4504, 4540, 5630, 7264, 9008, 9080, 11260, 18016, 18160, 22520, 36320, 45040, 90080, 127801, 255602, 511204, 639005, 1022408, 1278010, 2044816, 2556020, 4089632, 5112040, 10224080, 20448160]

約数ペア:

[(1, 20448160), (2, 10224080), (4, 5112040), (5, 4089632), (8, 2556020), (10, 2044816), (16, 1278010), (20, 1022408), (32, 639005), (40, 511204), (80, 255602), (160, 127801), (227, 90080), (454, 45040), (563, 36320), (908, 22520), (1126, 18160), (1135, 18016), (1816, 11260), (2252, 9080), (2270, 9008), (2815, 7264), (3632, 5630), (4504, 4540)]