19944220

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{191}}^1\times {\mathrm{227}}^1$

素因数の和:450

約数の個数: 48

約数和(自身を含む): 44126208

約数和(自身を除く): 24181988

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 191, 227, 230, 382, 454, 460, 764, 908, 955, 1135, 1910, 2270, 3820, 4393, 4540, 5221, 8786, 10442, 17572, 20884, 21965, 26105, 43357, 43930, 52210, 86714, 87860, 104420, 173428, 216785, 433570, 867140, 997211, 1994422, 3988844, 4986055, 9972110, 19944220]

約数ペア:

[(1, 19944220), (2, 9972110), (4, 4986055), (5, 3988844), (10, 1994422), (20, 997211), (23, 867140), (46, 433570), (92, 216785), (115, 173428), (191, 104420), (227, 87860), (230, 86714), (382, 52210), (454, 43930), (460, 43357), (764, 26105), (908, 21965), (955, 20884), (1135, 17572), (1910, 10442), (2270, 8786), (3820, 5221), (4393, 4540)]