20398329

素因数分解:

$3^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{83}}^2$

素因数の和:226

約数の個数: 36

約数和(自身を含む): 34809216

約数和(自身を除く): 14410887

約数列:

[1, 3, 7, 9, 21, 47, 63, 83, 141, 249, 329, 423, 581, 747, 987, 1743, 2961, 3901, 5229, 6889, 11703, 20667, 27307, 35109, 48223, 62001, 81921, 144669, 245763, 323783, 434007, 971349, 2266481, 2914047, 6799443, 20398329]

約数ペア:

[(1, 20398329), (3, 6799443), (7, 2914047), (9, 2266481), (21, 971349), (47, 434007), (63, 323783), (83, 245763), (141, 144669), (249, 81921), (329, 62001), (423, 48223), (581, 35109), (747, 27307), (987, 20667), (1743, 11703), (2961, 6889), (3901, 5229)]