21000966532

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{3036577}}^1$

素因数の和:3036620

約数の個数: 48

約数和(自身を含む): 47613543040

約数和(自身を除く): 26612576508

約数列:

[1, 2, 4, 7, 13, 14, 19, 26, 28, 38, 52, 76, 91, 133, 182, 247, 266, 364, 494, 532, 988, 1729, 3458, 6916, 3036577, 6073154, 12146308, 21256039, 39475501, 42512078, 57694963, 78951002, 85024156, 115389926, 157902004, 230779852, 276328507, 403864741, 552657014, 750034519, 807729482, 1105314028, 1500069038, 1615458964, 3000138076, 5250241633, 10500483266, 21000966532]

約数ペア:

[(1, 21000966532), (2, 10500483266), (4, 5250241633), (7, 3000138076), (13, 1615458964), (14, 1500069038), (19, 1105314028), (26, 807729482), (28, 750034519), (38, 552657014), (52, 403864741), (76, 276328507), (91, 230779852), (133, 157902004), (182, 115389926), (247, 85024156), (266, 78951002), (364, 57694963), (494, 42512078), (532, 39475501), (988, 21256039), (1729, 12146308), (3458, 6073154), (6916, 3036577)]