20943016

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{211}}^1\times {\mathrm{653}}^1$

素因数の和:889

約数の個数: 32

約数和(自身を含む): 41594400

約数和(自身を除く): 20651384

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 211, 422, 653, 844, 1306, 1688, 2612, 4009, 5224, 8018, 12407, 16036, 24814, 32072, 49628, 99256, 137783, 275566, 551132, 1102264, 2617877, 5235754, 10471508, 20943016]

約数ペア:

[(1, 20943016), (2, 10471508), (4, 5235754), (8, 2617877), (19, 1102264), (38, 551132), (76, 275566), (152, 137783), (211, 99256), (422, 49628), (653, 32072), (844, 24814), (1306, 16036), (1688, 12407), (2612, 8018), (4009, 5224)]