78551890

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{401}}^1\times {\mathrm{1031}}^1$

素因数の和:1458

約数の個数: 32

約数和(自身を含む): 149351040

約数和(自身を除く): 70799150

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 401, 802, 1031, 2005, 2062, 4010, 5155, 7619, 10310, 15238, 19589, 38095, 39178, 76190, 97945, 195890, 413431, 826862, 2067155, 4134310, 7855189, 15710378, 39275945, 78551890]

約数ペア:

[(1, 78551890), (2, 39275945), (5, 15710378), (10, 7855189), (19, 4134310), (38, 2067155), (95, 826862), (190, 413431), (401, 195890), (802, 97945), (1031, 76190), (2005, 39178), (2062, 38095), (4010, 19589), (5155, 15238), (7619, 10310)]