21000608685

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{2141}}^1\times {\mathrm{31139}}^1$

素因数の和:33298

約数の個数: 48

約数和(自身を含む): 41621973120

約数和(自身を除く): 20621364435

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 2141, 6423, 10705, 14987, 19269, 31139, 32115, 44961, 74935, 93417, 96345, 134883, 155695, 217973, 224805, 280251, 467085, 653919, 674415, 1089865, 1401255, 1961757, 3269595, 9808785, 66668599, 200005797, 333342995, 466680193, 600017391, 1000028985, 1400040579, 2333400965, 3000086955, 4200121737, 7000202895, 21000608685]

約数ペア:

[(1, 21000608685), (3, 7000202895), (5, 4200121737), (7, 3000086955), (9, 2333400965), (15, 1400040579), (21, 1000028985), (35, 600017391), (45, 466680193), (63, 333342995), (105, 200005797), (315, 66668599), (2141, 9808785), (6423, 3269595), (10705, 1961757), (14987, 1401255), (19269, 1089865), (31139, 674415), (32115, 653919), (44961, 467085), (74935, 280251), (93417, 224805), (96345, 217973), (134883, 155695)]