18504784

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{2099}}^1$

素因数の和:2155

約数の個数: 40

約数和(自身を含む): 39060000

約数和(自身を除く): 20555216

約数列:

[1, 2, 4, 8, 16, 19, 29, 38, 58, 76, 116, 152, 232, 304, 464, 551, 1102, 2099, 2204, 4198, 4408, 8396, 8816, 16792, 33584, 39881, 60871, 79762, 121742, 159524, 243484, 319048, 486968, 638096, 973936, 1156549, 2313098, 4626196, 9252392, 18504784]

約数ペア:

[(1, 18504784), (2, 9252392), (4, 4626196), (8, 2313098), (16, 1156549), (19, 973936), (29, 638096), (38, 486968), (58, 319048), (76, 243484), (116, 159524), (152, 121742), (232, 79762), (304, 60871), (464, 39881), (551, 33584), (1102, 16792), (2099, 8816), (2204, 8396), (4198, 4408)]