320857520

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{56489}}^1$

素因数の和:56573

約数の個数: 40

約数和(自身を含む): 756514080

約数和(自身を除く): 435656560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 5680, 56489, 112978, 225956, 282445, 451912, 564890, 903824, 1129780, 2259560, 4010719, 4519120, 8021438, 16042876, 20053595, 32085752, 40107190, 64171504, 80214380, 160428760, 320857520]

約数ペア:

[(1, 320857520), (2, 160428760), (4, 80214380), (5, 64171504), (8, 40107190), (10, 32085752), (16, 20053595), (20, 16042876), (40, 8021438), (71, 4519120), (80, 4010719), (142, 2259560), (284, 1129780), (355, 903824), (568, 564890), (710, 451912), (1136, 282445), (1420, 225956), (2840, 112978), (5680, 56489)]