21607075

素因数分解:

$5^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1$

素因数の和:172

約数の個数: 48

約数和(自身を含む): 32569344

約数和(自身を除く): 10962269

約数列:

[1, 5, 7, 25, 35, 37, 47, 71, 175, 185, 235, 259, 329, 355, 497, 925, 1175, 1295, 1645, 1739, 1775, 2485, 2627, 3337, 6475, 8225, 8695, 12173, 12425, 13135, 16685, 18389, 23359, 43475, 60865, 65675, 83425, 91945, 116795, 123469, 304325, 459725, 583975, 617345, 864283, 3086725, 4321415, 21607075]

約数ペア:

[(1, 21607075), (5, 4321415), (7, 3086725), (25, 864283), (35, 617345), (37, 583975), (47, 459725), (71, 304325), (175, 123469), (185, 116795), (235, 91945), (259, 83425), (329, 65675), (355, 60865), (497, 43475), (925, 23359), (1175, 18389), (1295, 16685), (1645, 13135), (1739, 12425), (1775, 12173), (2485, 8695), (2627, 8225), (3337, 6475)]