21359949

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{271}}^1$

素因数の和:377

約数の個数: 32

約数和(自身を含む): 32169984

約数和(自身を除く): 10810035

約数列:

[1, 3, 13, 39, 43, 47, 129, 141, 271, 559, 611, 813, 1677, 1833, 2021, 3523, 6063, 10569, 11653, 12737, 26273, 34959, 38211, 78819, 151489, 165581, 454467, 496743, 547691, 1643073, 7119983, 21359949]

約数ペア:

[(1, 21359949), (3, 7119983), (13, 1643073), (39, 547691), (43, 496743), (47, 454467), (129, 165581), (141, 151489), (271, 78819), (559, 38211), (611, 34959), (813, 26273), (1677, 12737), (1833, 11653), (2021, 10569), (3523, 6063)]