20959785

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{263}}^1$

素因数の和:315

約数の個数: 96

約数和(自身を含む): 47443968

約数和(自身を除く): 26484183

約数列:

[1, 3, 5, 7, 9, 11, 15, 21, 23, 33, 35, 45, 55, 63, 69, 77, 99, 105, 115, 161, 165, 207, 231, 253, 263, 315, 345, 385, 483, 495, 693, 759, 789, 805, 1035, 1155, 1265, 1315, 1449, 1771, 1841, 2277, 2367, 2415, 2893, 3465, 3795, 3945, 5313, 5523, 6049, 7245, 8679, 8855, 9205, 11385, 11835, 14465, 15939, 16569, 18147, 20251, 26037, 26565, 27615, 30245, 42343, 43395, 54441, 60753, 66539, 79695, 82845, 90735, 101255, 127029, 130185, 182259, 199617, 211715, 272205, 303765, 332695, 381087, 465773, 598851, 635145, 911295, 998085, 1397319, 1905435, 2328865, 2994255, 4191957, 6986595, 20959785]

約数ペア:

[(1, 20959785), (3, 6986595), (5, 4191957), (7, 2994255), (9, 2328865), (11, 1905435), (15, 1397319), (21, 998085), (23, 911295), (33, 635145), (35, 598851), (45, 465773), (55, 381087), (63, 332695), (69, 303765), (77, 272205), (99, 211715), (105, 199617), (115, 182259), (161, 130185), (165, 127029), (207, 101255), (231, 90735), (253, 82845), (263, 79695), (315, 66539), (345, 60753), (385, 54441), (483, 43395), (495, 42343), (693, 30245), (759, 27615), (789, 26565), (805, 26037), (1035, 20251), (1155, 18147), (1265, 16569), (1315, 15939), (1449, 14465), (1771, 11835), (1841, 11385), (2277, 9205), (2367, 8855), (2415, 8679), (2893, 7245), (3465, 6049), (3795, 5523), (3945, 5313)]