197821407

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{6983}}^1$

素因数の和:7083

約数の個数: 32

約数和(自身を含む): 321822720

約数和(自身を除く): 124001313

約数列:

[1, 3, 7, 19, 21, 57, 71, 133, 213, 399, 497, 1349, 1491, 4047, 6983, 9443, 20949, 28329, 48881, 132677, 146643, 398031, 495793, 928739, 1487379, 2786217, 3470551, 9420067, 10411653, 28260201, 65940469, 197821407]

約数ペア:

[(1, 197821407), (3, 65940469), (7, 28260201), (19, 10411653), (21, 9420067), (57, 3470551), (71, 2786217), (133, 1487379), (213, 928739), (399, 495793), (497, 398031), (1349, 146643), (1491, 132677), (4047, 48881), (6983, 28329), (9443, 20949)]