20178340

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{11087}}^1$

素因数の和:11116

約数の個数: 48

約数和(自身を含む): 52157952

約数和(自身を除く): 31979612

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 11087, 22174, 44348, 55435, 77609, 110870, 144131, 155218, 221740, 288262, 310436, 388045, 576524, 720655, 776090, 1008917, 1441310, 1552180, 2017834, 2882620, 4035668, 5044585, 10089170, 20178340]

約数ペア:

[(1, 20178340), (2, 10089170), (4, 5044585), (5, 4035668), (7, 2882620), (10, 2017834), (13, 1552180), (14, 1441310), (20, 1008917), (26, 776090), (28, 720655), (35, 576524), (52, 388045), (65, 310436), (70, 288262), (91, 221740), (130, 155218), (140, 144131), (182, 110870), (260, 77609), (364, 55435), (455, 44348), (910, 22174), (1820, 11087)]