21000401295

素因数分解:

$3^1\times 5^1\times {\mathrm{59}}^1\times {\mathrm{191}}^1\times {\mathrm{283}}^1\times {\mathrm{439}}^1$

素因数の和:980

約数の個数: 64

約数和(自身を含む): 34548940800

約数和(自身を除く): 13548539505

約数列:

[1, 3, 5, 15, 59, 177, 191, 283, 295, 439, 573, 849, 885, 955, 1317, 1415, 2195, 2865, 4245, 6585, 11269, 16697, 25901, 33807, 50091, 54053, 56345, 77703, 83485, 83849, 124237, 129505, 162159, 169035, 250455, 251547, 270265, 372711, 388515, 419245, 621185, 810795, 1257735, 1863555, 3189127, 4947091, 7329983, 9567381, 14841273, 15945635, 21989949, 23729267, 24735455, 36649915, 47836905, 71187801, 74206365, 109949745, 118646335, 355939005, 1400026753, 4200080259, 7000133765, 21000401295]

約数ペア:

[(1, 21000401295), (3, 7000133765), (5, 4200080259), (15, 1400026753), (59, 355939005), (177, 118646335), (191, 109949745), (283, 74206365), (295, 71187801), (439, 47836905), (573, 36649915), (849, 24735455), (885, 23729267), (955, 21989949), (1317, 15945635), (1415, 14841273), (2195, 9567381), (2865, 7329983), (4245, 4947091), (6585, 3189127), (11269, 1863555), (16697, 1257735), (25901, 810795), (33807, 621185), (50091, 419245), (54053, 388515), (56345, 372711), (77703, 270265), (83485, 251547), (83849, 250455), (124237, 169035), (129505, 162159)]