20998534

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{181}}^1$

素因数の和:316

約数の個数: 32

約数和(自身を含む): 34594560

約数和(自身を除く): 13596026

約数列:

[1, 2, 19, 38, 43, 71, 86, 142, 181, 362, 817, 1349, 1634, 2698, 3053, 3439, 6106, 6878, 7783, 12851, 15566, 25702, 58007, 116014, 147877, 244169, 295754, 488338, 552593, 1105186, 10499267, 20998534]

約数ペア:

[(1, 20998534), (2, 10499267), (19, 1105186), (38, 552593), (43, 488338), (71, 295754), (86, 244169), (142, 147877), (181, 116014), (362, 58007), (817, 25702), (1349, 15566), (1634, 12851), (2698, 7783), (3053, 6878), (3439, 6106)]