21013156

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{7537}}^1$

素因数の和:7599

約数の個数: 24

約数和(自身を含む): 39891096

約数和(自身を除く): 18877940

約数列:

[1, 2, 4, 17, 34, 41, 68, 82, 164, 697, 1394, 2788, 7537, 15074, 30148, 128129, 256258, 309017, 512516, 618034, 1236068, 5253289, 10506578, 21013156]

約数ペア:

[(1, 21013156), (2, 10506578), (4, 5253289), (17, 1236068), (34, 618034), (41, 512516), (68, 309017), (82, 256258), (164, 128129), (697, 30148), (1394, 15074), (2788, 7537)]