289980760

素因数分解:

$2^3\times 5^1\times {\mathrm{281}}^1\times {\mathrm{25799}}^1$

素因数の和:26091

約数の個数: 32

約数和(自身を含む): 654804000

約数和(自身を除く): 364823240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 281, 562, 1124, 1405, 2248, 2810, 5620, 11240, 25799, 51598, 103196, 128995, 206392, 257990, 515980, 1031960, 7249519, 14499038, 28998076, 36247595, 57996152, 72495190, 144990380, 289980760]

約数ペア:

[(1, 289980760), (2, 144990380), (4, 72495190), (5, 57996152), (8, 36247595), (10, 28998076), (20, 14499038), (40, 7249519), (281, 1031960), (562, 515980), (1124, 257990), (1405, 206392), (2248, 128995), (2810, 103196), (5620, 51598), (11240, 25799)]