20336979

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{181}}^1$

素因数の和:307

約数の個数: 32

約数和(自身を含む): 30494464

約数和(自身を除く): 10157485

約数列:

[1, 3, 13, 39, 43, 67, 129, 181, 201, 543, 559, 871, 1677, 2353, 2613, 2881, 7059, 7783, 8643, 12127, 23349, 36381, 37453, 101179, 112359, 157651, 303537, 472953, 521461, 1564383, 6778993, 20336979]

約数ペア:

[(1, 20336979), (3, 6778993), (13, 1564383), (39, 521461), (43, 472953), (67, 303537), (129, 157651), (181, 112359), (201, 101179), (543, 37453), (559, 36381), (871, 23349), (1677, 12127), (2353, 8643), (2613, 7783), (2881, 7059)]