19953305

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{193}}^1$

素因数の和:281

約数の個数: 32

約数和(自身を含む): 26818560

約数和(自身を除く): 6865255

約数列:

[1, 5, 23, 29, 31, 115, 145, 155, 193, 667, 713, 899, 965, 3335, 3565, 4439, 4495, 5597, 5983, 20677, 22195, 27985, 29915, 103385, 128731, 137609, 173507, 643655, 688045, 867535, 3990661, 19953305]

約数ペア:

[(1, 19953305), (5, 3990661), (23, 867535), (29, 688045), (31, 643655), (115, 173507), (145, 137609), (155, 128731), (193, 103385), (667, 29915), (713, 27985), (899, 22195), (965, 20677), (3335, 5983), (3565, 5597), (4439, 4495)]