20175820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{211}}^1\times {\mathrm{683}}^1$

素因数の和:910

約数の個数: 48

約数和(自身を含む): 48722688

約数和(自身を除く): 28546868

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 211, 422, 683, 844, 1055, 1366, 1477, 2110, 2732, 2954, 3415, 4220, 4781, 5908, 6830, 7385, 9562, 13660, 14770, 19124, 23905, 29540, 47810, 95620, 144113, 288226, 576452, 720565, 1008791, 1441130, 2017582, 2882260, 4035164, 5043955, 10087910, 20175820]

約数ペア:

[(1, 20175820), (2, 10087910), (4, 5043955), (5, 4035164), (7, 2882260), (10, 2017582), (14, 1441130), (20, 1008791), (28, 720565), (35, 576452), (70, 288226), (140, 144113), (211, 95620), (422, 47810), (683, 29540), (844, 23905), (1055, 19124), (1366, 14770), (1477, 13660), (2110, 9562), (2732, 7385), (2954, 6830), (3415, 5908), (4220, 4781)]