21473545

素因数分解:

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

素因数の和:217

約数の個数: 24

約数和(自身を含む): 27525960

約数和(自身を除く): 6052415

約数列:

[1, 5, 31, 41, 109, 155, 205, 545, 961, 1271, 3379, 4469, 4805, 6355, 16895, 22345, 39401, 104749, 138539, 197005, 523745, 692695, 4294709, 21473545]

約数ペア:

[(1, 21473545), (5, 4294709), (31, 692695), (41, 523745), (109, 197005), (155, 138539), (205, 104749), (545, 39401), (961, 22345), (1271, 16895), (3379, 6355), (4469, 4805)]