21753903

素因数分解:

$3^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1$

素因数の和:215

約数の個数: 32

約数和(自身を含む): 31352832

約数和(自身を除く): 9598929

約数列:

[1, 3, 41, 47, 53, 71, 123, 141, 159, 213, 1927, 2173, 2491, 2911, 3337, 3763, 5781, 6519, 7473, 8733, 10011, 11289, 102131, 136817, 154283, 176861, 306393, 410451, 462849, 530583, 7251301, 21753903]

約数ペア:

[(1, 21753903), (3, 7251301), (41, 530583), (47, 462849), (53, 410451), (71, 306393), (123, 176861), (141, 154283), (159, 136817), (213, 102131), (1927, 11289), (2173, 10011), (2491, 8733), (2911, 7473), (3337, 6519), (3763, 5781)]