20774650

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1031}}^1$

素因数の和:1087

約数の個数: 48

約数和(自身を含む): 42997248

約数和(自身を除く): 22222598

約数列:

[1, 2, 5, 10, 13, 25, 26, 31, 50, 62, 65, 130, 155, 310, 325, 403, 650, 775, 806, 1031, 1550, 2015, 2062, 4030, 5155, 10075, 10310, 13403, 20150, 25775, 26806, 31961, 51550, 63922, 67015, 134030, 159805, 319610, 335075, 415493, 670150, 799025, 830986, 1598050, 2077465, 4154930, 10387325, 20774650]

約数ペア:

[(1, 20774650), (2, 10387325), (5, 4154930), (10, 2077465), (13, 1598050), (25, 830986), (26, 799025), (31, 670150), (50, 415493), (62, 335075), (65, 319610), (130, 159805), (155, 134030), (310, 67015), (325, 63922), (403, 51550), (650, 31961), (775, 26806), (806, 25775), (1031, 20150), (1550, 13403), (2015, 10310), (2062, 10075), (4030, 5155)]