21590175

素因数分解:

$3^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{139}}^1$

素因数の和:280

約数の個数: 48

約数和(自身を含む): 38192000

約数和(自身を除く): 16601825

約数列:

[1, 3, 5, 15, 19, 25, 57, 75, 95, 109, 139, 285, 327, 417, 475, 545, 695, 1425, 1635, 2071, 2085, 2641, 2725, 3475, 6213, 7923, 8175, 10355, 10425, 13205, 15151, 31065, 39615, 45453, 51775, 66025, 75755, 155325, 198075, 227265, 287869, 378775, 863607, 1136325, 1439345, 4318035, 7196725, 21590175]

約数ペア:

[(1, 21590175), (3, 7196725), (5, 4318035), (15, 1439345), (19, 1136325), (25, 863607), (57, 378775), (75, 287869), (95, 227265), (109, 198075), (139, 155325), (285, 75755), (327, 66025), (417, 51775), (475, 45453), (545, 39615), (695, 31065), (1425, 15151), (1635, 13205), (2071, 10425), (2085, 10355), (2641, 8175), (2725, 7923), (3475, 6213)]