21256053

素因数分解:

$3^1\times 7^4\times {\mathrm{13}}^1\times {\mathrm{227}}^1$

素因数の和:271

約数の個数: 40

約数和(自身を含む): 35763168

約数和(自身を除く): 14507115

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 147, 227, 273, 343, 637, 681, 1029, 1589, 1911, 2401, 2951, 4459, 4767, 7203, 8853, 11123, 13377, 20657, 31213, 33369, 61971, 77861, 93639, 144599, 233583, 433797, 545027, 1012193, 1635081, 3036579, 7085351, 21256053]

約数ペア:

[(1, 21256053), (3, 7085351), (7, 3036579), (13, 1635081), (21, 1012193), (39, 545027), (49, 433797), (91, 233583), (147, 144599), (227, 93639), (273, 77861), (343, 61971), (637, 33369), (681, 31213), (1029, 20657), (1589, 13377), (1911, 11123), (2401, 8853), (2951, 7203), (4459, 4767)]