40780760

素因数分解:

$2^3\times 5^1\times {\mathrm{257}}^1\times {\mathrm{3967}}^1$

素因数の和:4235

約数の個数: 32

約数和(自身を含む): 92136960

約数和(自身を除く): 51356200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 257, 514, 1028, 1285, 2056, 2570, 3967, 5140, 7934, 10280, 15868, 19835, 31736, 39670, 79340, 158680, 1019519, 2039038, 4078076, 5097595, 8156152, 10195190, 20390380, 40780760]

約数ペア:

[(1, 40780760), (2, 20390380), (4, 10195190), (5, 8156152), (8, 5097595), (10, 4078076), (20, 2039038), (40, 1019519), (257, 158680), (514, 79340), (1028, 39670), (1285, 31736), (2056, 19835), (2570, 15868), (3967, 10280), (5140, 7934)]