19942725

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{1051}}^1$

素因数の和:1098

約数の個数: 48

約数和(自身を含む): 37569024

約数和(自身を除く): 17626299

約数列:

[1, 3, 5, 11, 15, 23, 25, 33, 55, 69, 75, 115, 165, 253, 275, 345, 575, 759, 825, 1051, 1265, 1725, 3153, 3795, 5255, 6325, 11561, 15765, 18975, 24173, 26275, 34683, 57805, 72519, 78825, 120865, 173415, 265903, 289025, 362595, 604325, 797709, 867075, 1329515, 1812975, 3988545, 6647575, 19942725]

約数ペア:

[(1, 19942725), (3, 6647575), (5, 3988545), (11, 1812975), (15, 1329515), (23, 867075), (25, 797709), (33, 604325), (55, 362595), (69, 289025), (75, 265903), (115, 173415), (165, 120865), (253, 78825), (275, 72519), (345, 57805), (575, 34683), (759, 26275), (825, 24173), (1051, 18975), (1265, 15765), (1725, 11561), (3153, 6325), (3795, 5255)]