28400495

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^2\times {\mathrm{109}}^1$

素因数の和:227

約数の個数: 24

約数和(自身を含む): 36389760

約数和(自身を除く): 7989265

約数列:

[1, 5, 31, 41, 109, 155, 205, 545, 1271, 1681, 3379, 4469, 6355, 8405, 16895, 22345, 52111, 138539, 183229, 260555, 692695, 916145, 5680099, 28400495]

約数ペア:

[(1, 28400495), (5, 5680099), (31, 916145), (41, 692695), (109, 260555), (155, 183229), (205, 138539), (545, 52111), (1271, 22345), (1681, 16895), (3379, 8405), (4469, 6355)]