20156989167

素因数分解:

$3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{278947}}^1$

素因数の和:279028

約数の個数: 48

約数和(自身を含む): 35276879872

約数和(自身を除く): 15119890705

約数列:

[1, 3, 7, 9, 21, 31, 37, 63, 93, 111, 217, 259, 279, 333, 651, 777, 1147, 1953, 2331, 3441, 8029, 10323, 24087, 72261, 278947, 836841, 1952629, 2510523, 5857887, 8647357, 10321039, 17573661, 25942071, 30963117, 60531499, 72247273, 77826213, 92889351, 181594497, 216741819, 319952209, 544783491, 650225457, 959856627, 2239665463, 2879569881, 6718996389, 20156989167]

約数ペア:

[(1, 20156989167), (3, 6718996389), (7, 2879569881), (9, 2239665463), (21, 959856627), (31, 650225457), (37, 544783491), (63, 319952209), (93, 216741819), (111, 181594497), (217, 92889351), (259, 77826213), (279, 72247273), (333, 60531499), (651, 30963117), (777, 25942071), (1147, 17573661), (1953, 10321039), (2331, 8647357), (3441, 5857887), (8029, 2510523), (10323, 1952629), (24087, 836841), (72261, 278947)]