21406647

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{101}}^1$

素因数の和:231

約数の個数: 32

約数和(自身を含む): 31021056

約数和(自身を除く): 9614409

約数列:

[1, 3, 31, 43, 53, 93, 101, 129, 159, 303, 1333, 1643, 2279, 3131, 3999, 4343, 4929, 5353, 6837, 9393, 13029, 16059, 70649, 134633, 165943, 211947, 230179, 403899, 497829, 690537, 7135549, 21406647]

約数ペア:

[(1, 21406647), (3, 7135549), (31, 690537), (43, 497829), (53, 403899), (93, 230179), (101, 211947), (129, 165943), (159, 134633), (303, 70649), (1333, 16059), (1643, 13029), (2279, 9393), (3131, 6837), (3999, 5353), (4343, 4929)]