18026020

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{149}}^1\times {\mathrm{263}}^1$

素因数の和:444

約数の個数: 48

約数和(自身を含む): 39916800

約数和(自身を除く): 21890780

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 149, 230, 263, 298, 460, 526, 596, 745, 1052, 1315, 1490, 2630, 2980, 3427, 5260, 6049, 6854, 12098, 13708, 17135, 24196, 30245, 34270, 39187, 60490, 68540, 78374, 120980, 156748, 195935, 391870, 783740, 901301, 1802602, 3605204, 4506505, 9013010, 18026020]

約数ペア:

[(1, 18026020), (2, 9013010), (4, 4506505), (5, 3605204), (10, 1802602), (20, 901301), (23, 783740), (46, 391870), (92, 195935), (115, 156748), (149, 120980), (230, 78374), (263, 68540), (298, 60490), (460, 39187), (526, 34270), (596, 30245), (745, 24196), (1052, 17135), (1315, 13708), (1490, 12098), (2630, 6854), (2980, 6049), (3427, 5260)]