1028080

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{181}}^1$

素因数の和:265

約数の個数: 40

約数和(自身を含む): 2437344

約数和(自身を除く): 1409264

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 181, 284, 355, 362, 568, 710, 724, 905, 1136, 1420, 1448, 1810, 2840, 2896, 3620, 5680, 7240, 12851, 14480, 25702, 51404, 64255, 102808, 128510, 205616, 257020, 514040, 1028080]

約数ペア:

[(1, 1028080), (2, 514040), (4, 257020), (5, 205616), (8, 128510), (10, 102808), (16, 64255), (20, 51404), (40, 25702), (71, 14480), (80, 12851), (142, 7240), (181, 5680), (284, 3620), (355, 2896), (362, 2840), (568, 1810), (710, 1448), (724, 1420), (905, 1136)]