18560540

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{157}}^1\times {\mathrm{257}}^1$

素因数の和:446

約数の個数: 48

約数和(自身を含む): 41090112

約数和(自身を除く): 22529572

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 157, 230, 257, 314, 460, 514, 628, 785, 1028, 1285, 1570, 2570, 3140, 3611, 5140, 5911, 7222, 11822, 14444, 18055, 23644, 29555, 36110, 40349, 59110, 72220, 80698, 118220, 161396, 201745, 403490, 806980, 928027, 1856054, 3712108, 4640135, 9280270, 18560540]

約数ペア:

[(1, 18560540), (2, 9280270), (4, 4640135), (5, 3712108), (10, 1856054), (20, 928027), (23, 806980), (46, 403490), (92, 201745), (115, 161396), (157, 118220), (230, 80698), (257, 72220), (314, 59110), (460, 40349), (514, 36110), (628, 29555), (785, 23644), (1028, 18055), (1285, 14444), (1570, 11822), (2570, 7222), (3140, 5911), (3611, 5140)]