78400780

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{1999}}^1$

素因数の和:2098

約数の個数: 48

約数和(自身を含む): 172368000

約数和(自身を除く): 93967220

約数列:

[1, 2, 4, 5, 10, 20, 37, 53, 74, 106, 148, 185, 212, 265, 370, 530, 740, 1060, 1961, 1999, 3922, 3998, 7844, 7996, 9805, 9995, 19610, 19990, 39220, 39980, 73963, 105947, 147926, 211894, 295852, 369815, 423788, 529735, 739630, 1059470, 1479260, 2118940, 3920039, 7840078, 15680156, 19600195, 39200390, 78400780]

約数ペア:

[(1, 78400780), (2, 39200390), (4, 19600195), (5, 15680156), (10, 7840078), (20, 3920039), (37, 2118940), (53, 1479260), (74, 1059470), (106, 739630), (148, 529735), (185, 423788), (212, 369815), (265, 295852), (370, 211894), (530, 147926), (740, 105947), (1060, 73963), (1961, 39980), (1999, 39220), (3922, 19990), (3998, 19610), (7844, 9995), (7996, 9805)]