20948356

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{691}}^1$

素因数の和:772

約数の個数: 48

約数和(自身を含む): 43944768

約数和(自身を除く): 22996412

約数列:

[1, 2, 4, 11, 13, 22, 26, 44, 52, 53, 106, 143, 212, 286, 572, 583, 689, 691, 1166, 1378, 1382, 2332, 2756, 2764, 7579, 7601, 8983, 15158, 15202, 17966, 30316, 30404, 35932, 36623, 73246, 98813, 146492, 197626, 395252, 402853, 476099, 805706, 952198, 1611412, 1904396, 5237089, 10474178, 20948356]

約数ペア:

[(1, 20948356), (2, 10474178), (4, 5237089), (11, 1904396), (13, 1611412), (22, 952198), (26, 805706), (44, 476099), (52, 402853), (53, 395252), (106, 197626), (143, 146492), (212, 98813), (286, 73246), (572, 36623), (583, 35932), (689, 30404), (691, 30316), (1166, 17966), (1378, 15202), (1382, 15158), (2332, 8983), (2756, 7601), (2764, 7579)]