21187244

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{4909}}^1$

素因数の和:5009

約数の個数: 24

約数和(自身を含む): 40419120

約数和(自身を除く): 19231876

約数列:

[1, 2, 4, 13, 26, 52, 83, 166, 332, 1079, 2158, 4316, 4909, 9818, 19636, 63817, 127634, 255268, 407447, 814894, 1629788, 5296811, 10593622, 21187244]

約数ペア:

[(1, 21187244), (2, 10593622), (4, 5296811), (13, 1629788), (26, 814894), (52, 407447), (83, 255268), (166, 127634), (332, 63817), (1079, 19636), (2158, 9818), (4316, 4909)]