19778884

素因数分解:

$2^2\times {\mathrm{61}}^1\times {\mathrm{103}}^1\times {\mathrm{787}}^1$

素因数の和:955

約数の個数: 24

約数和(自身を含む): 35567168

約数和(自身を除く): 15788284

約数列:

[1, 2, 4, 61, 103, 122, 206, 244, 412, 787, 1574, 3148, 6283, 12566, 25132, 48007, 81061, 96014, 162122, 192028, 324244, 4944721, 9889442, 19778884]

約数ペア:

[(1, 19778884), (2, 9889442), (4, 4944721), (61, 324244), (103, 192028), (122, 162122), (206, 96014), (244, 81061), (412, 48007), (787, 25132), (1574, 12566), (3148, 6283)]