21891226

素因数分解:

$2^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{163}}^1\times {\mathrm{181}}^1$

素因数の和:406

約数の個数: 32

約数和(自身を含む): 38683008

約数和(自身を除く): 16791782

約数列:

[1, 2, 7, 14, 53, 106, 163, 181, 326, 362, 371, 742, 1141, 1267, 2282, 2534, 8639, 9593, 17278, 19186, 29503, 59006, 60473, 67151, 120946, 134302, 206521, 413042, 1563659, 3127318, 10945613, 21891226]

約数ペア:

[(1, 21891226), (2, 10945613), (7, 3127318), (14, 1563659), (53, 413042), (106, 206521), (163, 134302), (181, 120946), (326, 67151), (362, 60473), (371, 59006), (742, 29503), (1141, 19186), (1267, 17278), (2282, 9593), (2534, 8639)]