21000953325

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{358531}}^1$

素因数の和:358626

約数の個数: 48

約数和(自身を含む): 38411684352

約数和(自身を除く): 17410731027

約数列:

[1, 3, 5, 11, 15, 25, 33, 55, 71, 75, 165, 213, 275, 355, 781, 825, 1065, 1775, 2343, 3905, 5325, 11715, 19525, 58575, 358531, 1075593, 1792655, 3943841, 5377965, 8963275, 11831523, 19719205, 25455701, 26889825, 59157615, 76367103, 98596025, 127278505, 280012711, 295788075, 381835515, 636392525, 840038133, 1400063555, 1909177575, 4200190665, 7000317775, 21000953325]

約数ペア:

[(1, 21000953325), (3, 7000317775), (5, 4200190665), (11, 1909177575), (15, 1400063555), (25, 840038133), (33, 636392525), (55, 381835515), (71, 295788075), (75, 280012711), (165, 127278505), (213, 98596025), (275, 76367103), (355, 59157615), (781, 26889825), (825, 25455701), (1065, 19719205), (1775, 11831523), (2343, 8963275), (3905, 5377965), (5325, 3943841), (11715, 1792655), (19525, 1075593), (58575, 358531)]