1315691780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{439}}^1\times {\mathrm{11527}}^1$

素因数の和:11988

約数の個数: 48

約数和(自身を含む): 2982524160

約数和(自身を除く): 1666832380

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 439, 878, 1756, 2195, 4390, 5707, 8780, 11414, 11527, 22828, 23054, 28535, 46108, 57070, 57635, 114140, 115270, 149851, 230540, 299702, 599404, 749255, 1498510, 2997020, 5060353, 10120706, 20241412, 25301765, 50603530, 65784589, 101207060, 131569178, 263138356, 328922945, 657845890, 1315691780]

約数ペア:

[(1, 1315691780), (2, 657845890), (4, 328922945), (5, 263138356), (10, 131569178), (13, 101207060), (20, 65784589), (26, 50603530), (52, 25301765), (65, 20241412), (130, 10120706), (260, 5060353), (439, 2997020), (878, 1498510), (1756, 749255), (2195, 599404), (4390, 299702), (5707, 230540), (8780, 149851), (11414, 115270), (11527, 114140), (22828, 57635), (23054, 57070), (28535, 46108)]