21911715

素因数分解:

$3^4\times 5^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{131}}^1$

素因数の和:214

約数の個数: 80

約数和(自身を含む): 45999360

約数和(自身を除く): 24087645

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 59, 63, 81, 105, 131, 135, 177, 189, 295, 315, 393, 405, 413, 531, 567, 655, 885, 917, 945, 1179, 1239, 1593, 1965, 2065, 2655, 2751, 2835, 3537, 3717, 4585, 4779, 5895, 6195, 7729, 7965, 8253, 10611, 11151, 13755, 17685, 18585, 23187, 23895, 24759, 33453, 38645, 41265, 53055, 54103, 55755, 69561, 74277, 115935, 123795, 162309, 167265, 208683, 270515, 347805, 371385, 486927, 626049, 811545, 1043415, 1460781, 2434635, 3130245, 4382343, 7303905, 21911715]

約数ペア:

[(1, 21911715), (3, 7303905), (5, 4382343), (7, 3130245), (9, 2434635), (15, 1460781), (21, 1043415), (27, 811545), (35, 626049), (45, 486927), (59, 371385), (63, 347805), (81, 270515), (105, 208683), (131, 167265), (135, 162309), (177, 123795), (189, 115935), (295, 74277), (315, 69561), (393, 55755), (405, 54103), (413, 53055), (531, 41265), (567, 38645), (655, 33453), (885, 24759), (917, 23895), (945, 23187), (1179, 18585), (1239, 17685), (1593, 13755), (1965, 11151), (2065, 10611), (2655, 8253), (2751, 7965), (2835, 7729), (3537, 6195), (3717, 5895), (4585, 4779)]