21438261

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{1889}}^1$

素因数の和:2005

約数の個数: 24

約数和(自身を含む): 33710040

約数和(自身を除く): 12271779

約数列:

[1, 3, 9, 13, 39, 97, 117, 291, 873, 1261, 1889, 3783, 5667, 11349, 17001, 24557, 73671, 183233, 221013, 549699, 1649097, 2382029, 7146087, 21438261]

約数ペア:

[(1, 21438261), (3, 7146087), (9, 2382029), (13, 1649097), (39, 549699), (97, 221013), (117, 183233), (291, 73671), (873, 24557), (1261, 17001), (1889, 11349), (3783, 5667)]