196620921

素因数分解:

$3^2\times 7^1\times {\mathrm{139}}^1\times {\mathrm{22453}}^1$

素因数の和:22605

約数の個数: 24

約数和(自身を含む): 326930240

約数和(自身を除く): 130309319

約数列:

[1, 3, 7, 9, 21, 63, 139, 417, 973, 1251, 2919, 8757, 22453, 67359, 157171, 202077, 471513, 1414539, 3120967, 9362901, 21846769, 28088703, 65540307, 196620921]

約数ペア:

[(1, 196620921), (3, 65540307), (7, 28088703), (9, 21846769), (21, 9362901), (63, 3120967), (139, 1414539), (417, 471513), (973, 202077), (1251, 157171), (2919, 67359), (8757, 22453)]