20208580

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{1213}}^1$

素因数の和:1253

約数の個数: 72

約数和(自身を含む): 52313688

約数和(自身を除く): 32105108

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 49, 68, 70, 85, 98, 119, 140, 170, 196, 238, 245, 340, 476, 490, 595, 833, 980, 1190, 1213, 1666, 2380, 2426, 3332, 4165, 4852, 6065, 8330, 8491, 12130, 16660, 16982, 20621, 24260, 33964, 41242, 42455, 59437, 82484, 84910, 103105, 118874, 144347, 169820, 206210, 237748, 288694, 297185, 412420, 577388, 594370, 721735, 1010429, 1188740, 1443470, 2020858, 2886940, 4041716, 5052145, 10104290, 20208580]

約数ペア:

[(1, 20208580), (2, 10104290), (4, 5052145), (5, 4041716), (7, 2886940), (10, 2020858), (14, 1443470), (17, 1188740), (20, 1010429), (28, 721735), (34, 594370), (35, 577388), (49, 412420), (68, 297185), (70, 288694), (85, 237748), (98, 206210), (119, 169820), (140, 144347), (170, 118874), (196, 103105), (238, 84910), (245, 82484), (340, 59437), (476, 42455), (490, 41242), (595, 33964), (833, 24260), (980, 20621), (1190, 16982), (1213, 16660), (1666, 12130), (2380, 8491), (2426, 8330), (3332, 6065), (4165, 4852)]