19639585

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{787}}^1$

素因数の和:853

約数の個数: 32

約数和(自身を含む): 29048832

約数和(自身を除く): 9409247

約数列:

[1, 5, 7, 23, 31, 35, 115, 155, 161, 217, 713, 787, 805, 1085, 3565, 3935, 4991, 5509, 18101, 24397, 24955, 27545, 90505, 121985, 126707, 170779, 561131, 633535, 853895, 2805655, 3927917, 19639585]

約数ペア:

[(1, 19639585), (5, 3927917), (7, 2805655), (23, 853895), (31, 633535), (35, 561131), (115, 170779), (155, 126707), (161, 121985), (217, 90505), (713, 27545), (787, 24955), (805, 24397), (1085, 18101), (3565, 5509), (3935, 4991)]