21780756

素因数分解:

$2^2\times 3^2\times {\mathrm{605021}}^1$

素因数の和:605031

約数の個数: 18

約数和(自身を含む): 55057002

約数和(自身を除く): 33276246

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 605021, 1210042, 1815063, 2420084, 3630126, 5445189, 7260252, 10890378, 21780756]

約数ペア:

[(1, 21780756), (2, 10890378), (3, 7260252), (4, 5445189), (6, 3630126), (9, 2420084), (12, 1815063), (18, 1210042), (36, 605021)]