21727953

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{601}}^1$

素因数の和:726

約数の個数: 32

約数和(自身を含む): 35060480

約数和(自身を除く): 13332527

約数列:

[1, 3, 9, 13, 27, 39, 103, 117, 309, 351, 601, 927, 1339, 1803, 2781, 4017, 5409, 7813, 12051, 16227, 23439, 36153, 61903, 70317, 185709, 210951, 557127, 804739, 1671381, 2414217, 7242651, 21727953]

約数ペア:

[(1, 21727953), (3, 7242651), (9, 2414217), (13, 1671381), (27, 804739), (39, 557127), (103, 210951), (117, 185709), (309, 70317), (351, 61903), (601, 36153), (927, 23439), (1339, 16227), (1803, 12051), (2781, 7813), (4017, 5409)]