20199310180

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{53}}^1\times {\mathrm{388897}}^1$

素因数の和:388973

約数の個数: 72

約数和(自身を含む): 50275177848

約数和(自身を除く): 30075867668

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 53, 70, 98, 106, 140, 196, 212, 245, 265, 371, 490, 530, 742, 980, 1060, 1484, 1855, 2597, 3710, 5194, 7420, 10388, 12985, 25970, 51940, 388897, 777794, 1555588, 1944485, 2722279, 3888970, 5444558, 7777940, 10889116, 13611395, 19055953, 20611541, 27222790, 38111906, 41223082, 54445580, 76223812, 82446164, 95279765, 103057705, 144280787, 190559530, 206115410, 288561574, 381119060, 412230820, 577123148, 721403935, 1009965509, 1442807870, 2019931018, 2885615740, 4039862036, 5049827545, 10099655090, 20199310180]

約数ペア:

[(1, 20199310180), (2, 10099655090), (4, 5049827545), (5, 4039862036), (7, 2885615740), (10, 2019931018), (14, 1442807870), (20, 1009965509), (28, 721403935), (35, 577123148), (49, 412230820), (53, 381119060), (70, 288561574), (98, 206115410), (106, 190559530), (140, 144280787), (196, 103057705), (212, 95279765), (245, 82446164), (265, 76223812), (371, 54445580), (490, 41223082), (530, 38111906), (742, 27222790), (980, 20611541), (1060, 19055953), (1484, 13611395), (1855, 10889116), (2597, 7777940), (3710, 5444558), (5194, 3888970), (7420, 2722279), (10388, 1944485), (12985, 1555588), (25970, 777794), (51940, 388897)]