206980015

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{191}}^1$

素因数の和:304

約数の個数: 64

約数和(自身を含む): 308551680

約数和(自身を除く): 101571665

約数列:

[1, 5, 11, 17, 19, 55, 61, 85, 95, 187, 191, 209, 305, 323, 671, 935, 955, 1037, 1045, 1159, 1615, 2101, 3247, 3355, 3553, 3629, 5185, 5795, 10505, 11407, 11651, 12749, 16235, 17765, 18145, 19703, 35717, 39919, 57035, 58255, 61693, 63745, 98515, 128161, 178585, 198067, 199595, 216733, 221369, 308465, 640805, 678623, 990335, 1083665, 1106845, 2178737, 2435059, 3393115, 3763273, 10893685, 12175295, 18816365, 41396003, 206980015]

約数ペア:

[(1, 206980015), (5, 41396003), (11, 18816365), (17, 12175295), (19, 10893685), (55, 3763273), (61, 3393115), (85, 2435059), (95, 2178737), (187, 1106845), (191, 1083665), (209, 990335), (305, 678623), (323, 640805), (671, 308465), (935, 221369), (955, 216733), (1037, 199595), (1045, 198067), (1159, 178585), (1615, 128161), (2101, 98515), (3247, 63745), (3355, 61693), (3553, 58255), (3629, 57035), (5185, 39919), (5795, 35717), (10505, 19703), (11407, 18145), (11651, 17765), (12749, 16235)]