20621391

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{1229}}^1$

素因数の和:1303

約数の個数: 32

約数和(自身を含む): 34007040

約数和(自身を除く): 13385649

約数列:

[1, 3, 7, 17, 21, 47, 51, 119, 141, 329, 357, 799, 987, 1229, 2397, 3687, 5593, 8603, 16779, 20893, 25809, 57763, 62679, 146251, 173289, 404341, 438753, 981971, 1213023, 2945913, 6873797, 20621391]

約数ペア:

[(1, 20621391), (3, 6873797), (7, 2945913), (17, 1213023), (21, 981971), (47, 438753), (51, 404341), (119, 173289), (141, 146251), (329, 62679), (357, 57763), (799, 25809), (987, 20893), (1229, 16779), (2397, 8603), (3687, 5593)]