21911180

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^2\times {\mathrm{109}}^1$

素因数の和:183

約数の個数: 72

約数和(自身を含む): 51097200

約数和(自身を除く): 29186020

約数列:

[1, 2, 4, 5, 10, 19, 20, 23, 38, 46, 76, 92, 95, 109, 115, 190, 218, 230, 380, 436, 437, 460, 529, 545, 874, 1058, 1090, 1748, 2071, 2116, 2180, 2185, 2507, 2645, 4142, 4370, 5014, 5290, 8284, 8740, 10028, 10051, 10355, 10580, 12535, 20102, 20710, 25070, 40204, 41420, 47633, 50140, 50255, 57661, 95266, 100510, 115322, 190532, 201020, 230644, 238165, 288305, 476330, 576610, 952660, 1095559, 1153220, 2191118, 4382236, 5477795, 10955590, 21911180]

約数ペア:

[(1, 21911180), (2, 10955590), (4, 5477795), (5, 4382236), (10, 2191118), (19, 1153220), (20, 1095559), (23, 952660), (38, 576610), (46, 476330), (76, 288305), (92, 238165), (95, 230644), (109, 201020), (115, 190532), (190, 115322), (218, 100510), (230, 95266), (380, 57661), (436, 50255), (437, 50140), (460, 47633), (529, 41420), (545, 40204), (874, 25070), (1058, 20710), (1090, 20102), (1748, 12535), (2071, 10580), (2116, 10355), (2180, 10051), (2185, 10028), (2507, 8740), (2645, 8284), (4142, 5290), (4370, 5014)]