561801580

素因数分解:

$2^2\times 5^1\times {\mathrm{389}}^1\times {\mathrm{72211}}^1$

素因数の和:72609

約数の個数: 24

約数和(自身を含む): 1182832560

約数和(自身を除く): 621030980

約数列:

[1, 2, 4, 5, 10, 20, 389, 778, 1556, 1945, 3890, 7780, 72211, 144422, 288844, 361055, 722110, 1444220, 28090079, 56180158, 112360316, 140450395, 280900790, 561801580]

約数ペア:

[(1, 561801580), (2, 280900790), (4, 140450395), (5, 112360316), (10, 56180158), (20, 28090079), (389, 1444220), (778, 722110), (1556, 361055), (1945, 288844), (3890, 144422), (7780, 72211)]