21554637

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{73}}^1\times {\mathrm{113}}^1$

素因数の和:269

約数の個数: 32

約数和(自身を含む): 32124288

約数和(自身を除く): 10569651

約数列:

[1, 3, 13, 39, 67, 73, 113, 201, 219, 339, 871, 949, 1469, 2613, 2847, 4407, 4891, 7571, 8249, 14673, 22713, 24747, 63583, 98423, 107237, 190749, 295269, 321711, 552683, 1658049, 7184879, 21554637]

約数ペア:

[(1, 21554637), (3, 7184879), (13, 1658049), (39, 552683), (67, 321711), (73, 295269), (113, 190749), (201, 107237), (219, 98423), (339, 63583), (871, 24747), (949, 22713), (1469, 14673), (2613, 8249), (2847, 7571), (4407, 4891)]