20870964

素因数分解:

$2^2\times 3^2\times {\mathrm{691}}^1\times {\mathrm{839}}^1$

素因数の和:1540

約数の個数: 36

約数和(自身を含む): 52896480

約数和(自身を除く): 32025516

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 691, 839, 1382, 1678, 2073, 2517, 2764, 3356, 4146, 5034, 6219, 7551, 8292, 10068, 12438, 15102, 24876, 30204, 579749, 1159498, 1739247, 2318996, 3478494, 5217741, 6956988, 10435482, 20870964]

約数ペア:

[(1, 20870964), (2, 10435482), (3, 6956988), (4, 5217741), (6, 3478494), (9, 2318996), (12, 1739247), (18, 1159498), (36, 579749), (691, 30204), (839, 24876), (1382, 15102), (1678, 12438), (2073, 10068), (2517, 8292), (2764, 7551), (3356, 6219), (4146, 5034)]