399520

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{227}}^1$

素因数の和:253

約数の個数: 48

約数和(自身を含む): 1034208

約数和(自身を除く): 634688

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 160, 176, 220, 227, 352, 440, 454, 880, 908, 1135, 1760, 1816, 2270, 2497, 3632, 4540, 4994, 7264, 9080, 9988, 12485, 18160, 19976, 24970, 36320, 39952, 49940, 79904, 99880, 199760, 399520]

約数ペア:

[(1, 399520), (2, 199760), (4, 99880), (5, 79904), (8, 49940), (10, 39952), (11, 36320), (16, 24970), (20, 19976), (22, 18160), (32, 12485), (40, 9988), (44, 9080), (55, 7264), (80, 4994), (88, 4540), (110, 3632), (160, 2497), (176, 2270), (220, 1816), (227, 1760), (352, 1135), (440, 908), (454, 880)]