19923921

素因数分解:

$3^3\times {\mathrm{43}}^1\times {\mathrm{131}}^2$

素因数の和:314

約数の個数: 24

約数和(自身を含む): 30435680

約数和(自身を除く): 10511759

約数列:

[1, 3, 9, 27, 43, 129, 131, 387, 393, 1161, 1179, 3537, 5633, 16899, 17161, 50697, 51483, 152091, 154449, 463347, 737923, 2213769, 6641307, 19923921]

約数ペア:

[(1, 19923921), (3, 6641307), (9, 2213769), (27, 737923), (43, 463347), (129, 154449), (131, 152091), (387, 51483), (393, 50697), (1161, 17161), (1179, 16899), (3537, 5633)]