19829859

素因数分解:

$3^1\times 7^4\times {\mathrm{2753}}^1$

素因数の和:2784

約数の個数: 20

約数和(自身を含む): 30855816

約数和(自身を除く): 11025957

約数列:

[1, 3, 7, 21, 49, 147, 343, 1029, 2401, 2753, 7203, 8259, 19271, 57813, 134897, 404691, 944279, 2832837, 6609953, 19829859]

約数ペア:

[(1, 19829859), (3, 6609953), (7, 2832837), (21, 944279), (49, 404691), (147, 134897), (343, 57813), (1029, 19271), (2401, 8259), (2753, 7203)]