40218820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{971}}^1$

素因数の和:1108

約数の個数: 48

約数和(自身を含む): 89812800

約数和(自身を除く): 49593980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 109, 190, 218, 380, 436, 545, 971, 1090, 1942, 2071, 2180, 3884, 4142, 4855, 8284, 9710, 10355, 18449, 19420, 20710, 36898, 41420, 73796, 92245, 105839, 184490, 211678, 368980, 423356, 529195, 1058390, 2010941, 2116780, 4021882, 8043764, 10054705, 20109410, 40218820]

約数ペア:

[(1, 40218820), (2, 20109410), (4, 10054705), (5, 8043764), (10, 4021882), (19, 2116780), (20, 2010941), (38, 1058390), (76, 529195), (95, 423356), (109, 368980), (190, 211678), (218, 184490), (380, 105839), (436, 92245), (545, 73796), (971, 41420), (1090, 36898), (1942, 20710), (2071, 19420), (2180, 18449), (3884, 10355), (4142, 9710), (4855, 8284)]