20199381517

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{137}}^1\times {\mathrm{157}}^1\times {\mathrm{307}}^1$

素因数の和:650

約数の個数: 64

約数和(自身を含む): 25788026880

約数和(自身を除く): 5588645363

約数列:

[1, 7, 19, 23, 133, 137, 157, 161, 307, 437, 959, 1099, 2149, 2603, 2983, 3059, 3151, 3611, 5833, 7061, 18221, 20881, 21509, 22057, 25277, 40831, 42059, 48199, 49427, 59869, 68609, 134159, 150563, 294413, 337393, 408671, 419083, 480263, 494707, 799121, 915781, 939113, 967357, 1108577, 2860697, 3462949, 5593847, 6410467, 6603263, 6771499, 7760039, 9399433, 18379783, 21062963, 46222841, 65796031, 125461997, 128658481, 147440741, 151875049, 878233979, 1063125343, 2885625931, 20199381517]

約数ペア:

[(1, 20199381517), (7, 2885625931), (19, 1063125343), (23, 878233979), (133, 151875049), (137, 147440741), (157, 128658481), (161, 125461997), (307, 65796031), (437, 46222841), (959, 21062963), (1099, 18379783), (2149, 9399433), (2603, 7760039), (2983, 6771499), (3059, 6603263), (3151, 6410467), (3611, 5593847), (5833, 3462949), (7061, 2860697), (18221, 1108577), (20881, 967357), (21509, 939113), (22057, 915781), (25277, 799121), (40831, 494707), (42059, 480263), (48199, 419083), (49427, 408671), (59869, 337393), (68609, 294413), (134159, 150563)]