138780579

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{347821}}^1$

素因数の和:347850

約数の個数: 16

約数和(自身を含む): 222606080

約数和(自身を除く): 83825501

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 347821, 1043463, 2434747, 6608599, 7304241, 19825797, 46260193, 138780579]

約数ペア:

[(1, 138780579), (3, 46260193), (7, 19825797), (19, 7304241), (21, 6608599), (57, 2434747), (133, 1043463), (399, 347821)]