21338145

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{27893}}^1$

素因数の和:27921

約数の個数: 24

約数和(自身を含む): 39163176

約数和(自身を除く): 17825031

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 765, 27893, 83679, 139465, 251037, 418395, 474181, 1255185, 1422543, 2370905, 4267629, 7112715, 21338145]

約数ペア:

[(1, 21338145), (3, 7112715), (5, 4267629), (9, 2370905), (15, 1422543), (17, 1255185), (45, 474181), (51, 418395), (85, 251037), (153, 139465), (255, 83679), (765, 27893)]