20591450

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{1291}}^1$

素因数の和:1343

約数の個数: 48

約数和(自身を含む): 43256160

約数和(自身を除く): 22664710

約数列:

[1, 2, 5, 10, 11, 22, 25, 29, 50, 55, 58, 110, 145, 275, 290, 319, 550, 638, 725, 1291, 1450, 1595, 2582, 3190, 6455, 7975, 12910, 14201, 15950, 28402, 32275, 37439, 64550, 71005, 74878, 142010, 187195, 355025, 374390, 411829, 710050, 823658, 935975, 1871950, 2059145, 4118290, 10295725, 20591450]

約数ペア:

[(1, 20591450), (2, 10295725), (5, 4118290), (10, 2059145), (11, 1871950), (22, 935975), (25, 823658), (29, 710050), (50, 411829), (55, 374390), (58, 355025), (110, 187195), (145, 142010), (275, 74878), (290, 71005), (319, 64550), (550, 37439), (638, 32275), (725, 28402), (1291, 15950), (1450, 14201), (1595, 12910), (2582, 7975), (3190, 6455)]