18180916

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{173}}^1$

素因数の和:280

約数の個数: 48

約数和(自身を含む): 36013824

約数和(自身を除く): 17832908

約数列:

[1, 2, 4, 13, 26, 43, 47, 52, 86, 94, 172, 173, 188, 346, 559, 611, 692, 1118, 1222, 2021, 2236, 2249, 2444, 4042, 4498, 7439, 8084, 8131, 8996, 14878, 16262, 26273, 29756, 32524, 52546, 96707, 105092, 105703, 193414, 211406, 349633, 386828, 422812, 699266, 1398532, 4545229, 9090458, 18180916]

約数ペア:

[(1, 18180916), (2, 9090458), (4, 4545229), (13, 1398532), (26, 699266), (43, 422812), (47, 386828), (52, 349633), (86, 211406), (94, 193414), (172, 105703), (173, 105092), (188, 96707), (346, 52546), (559, 32524), (611, 29756), (692, 26273), (1118, 16262), (1222, 14878), (2021, 8996), (2236, 8131), (2249, 8084), (2444, 7439), (4042, 4498)]