20870161917

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{73}}^1\times {\mathrm{857}}^1\times {\mathrm{919}}^1$

素因数の和:1874

約数の個数: 48

約数和(自身を含む): 31075524480

約数和(自身を除く): 10205362563

約数列:

[1, 3, 11, 33, 73, 121, 219, 363, 803, 857, 919, 2409, 2571, 2757, 8833, 9427, 10109, 26499, 28281, 30327, 62561, 67087, 103697, 111199, 187683, 201261, 311091, 333597, 688171, 737957, 787583, 2064513, 2213871, 2362749, 7569881, 8117527, 8663413, 22709643, 24352581, 25990239, 57493559, 95297543, 172480677, 285892629, 632429149, 1897287447, 6956720639, 20870161917]

約数ペア:

[(1, 20870161917), (3, 6956720639), (11, 1897287447), (33, 632429149), (73, 285892629), (121, 172480677), (219, 95297543), (363, 57493559), (803, 25990239), (857, 24352581), (919, 22709643), (2409, 8663413), (2571, 8117527), (2757, 7569881), (8833, 2362749), (9427, 2213871), (10109, 2064513), (26499, 787583), (28281, 737957), (30327, 688171), (62561, 333597), (67087, 311091), (103697, 201261), (111199, 187683)]