21235305

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{331}}^1$

素因数の和:406

約数の個数: 64

約数和(自身を含む): 42835968

約数和(自身を除く): 21600663

約数列:

[1, 3, 5, 7, 13, 15, 21, 35, 39, 47, 65, 91, 105, 141, 195, 235, 273, 329, 331, 455, 611, 705, 987, 993, 1365, 1645, 1655, 1833, 2317, 3055, 4277, 4303, 4935, 4965, 6951, 9165, 11585, 12831, 12909, 15557, 21385, 21515, 30121, 34755, 46671, 64155, 64545, 77785, 90363, 108899, 150605, 202241, 233355, 326697, 451815, 544495, 606723, 1011205, 1415687, 1633485, 3033615, 4247061, 7078435, 21235305]

約数ペア:

[(1, 21235305), (3, 7078435), (5, 4247061), (7, 3033615), (13, 1633485), (15, 1415687), (21, 1011205), (35, 606723), (39, 544495), (47, 451815), (65, 326697), (91, 233355), (105, 202241), (141, 150605), (195, 108899), (235, 90363), (273, 77785), (329, 64545), (331, 64155), (455, 46671), (611, 34755), (705, 30121), (987, 21515), (993, 21385), (1365, 15557), (1645, 12909), (1655, 12831), (1833, 11585), (2317, 9165), (3055, 6951), (4277, 4965), (4303, 4935)]