20993840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{37489}}^1$

素因数の和:37509

約数の個数: 40

約数和(自身を含む): 55785120

約数和(自身を除く): 34791280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 37489, 74978, 149956, 187445, 262423, 299912, 374890, 524846, 599824, 749780, 1049692, 1312115, 1499560, 2099384, 2624230, 2999120, 4198768, 5248460, 10496920, 20993840]

約数ペア:

[(1, 20993840), (2, 10496920), (4, 5248460), (5, 4198768), (7, 2999120), (8, 2624230), (10, 2099384), (14, 1499560), (16, 1312115), (20, 1049692), (28, 749780), (35, 599824), (40, 524846), (56, 374890), (70, 299912), (80, 262423), (112, 187445), (140, 149956), (280, 74978), (560, 37489)]