138730221

素因数分解:

$3^2\times 7^2\times {\mathrm{314581}}^1$

素因数の和:314601

約数の個数: 18

約数和(自身を含む): 233105262

約数和(自身を除く): 94375041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 314581, 943743, 2202067, 2831229, 6606201, 15414469, 19818603, 46243407, 138730221]

約数ペア:

[(1, 138730221), (3, 46243407), (7, 19818603), (9, 15414469), (21, 6606201), (49, 2831229), (63, 2202067), (147, 943743), (441, 314581)]