20170123580

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{12765901}}^1$

素因数の和:12765989

約数の個数: 24

約数和(自身を含む): 42893430720

約数和(自身を除く): 22723307140

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 12765901, 25531802, 51063604, 63829505, 127659010, 255318020, 1008506179, 2017012358, 4034024716, 5042530895, 10085061790, 20170123580]

約数ペア:

[(1, 20170123580), (2, 10085061790), (4, 5042530895), (5, 4034024716), (10, 2017012358), (20, 1008506179), (79, 255318020), (158, 127659010), (316, 63829505), (395, 51063604), (790, 25531802), (1580, 12765901)]