21513320

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{28307}}^1$

素因数の和:28337

約数の個数: 32

約数和(自身を含む): 50954400

約数和(自身を除く): 29441080

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 28307, 56614, 113228, 141535, 226456, 283070, 537833, 566140, 1075666, 1132280, 2151332, 2689165, 4302664, 5378330, 10756660, 21513320]

約数ペア:

[(1, 21513320), (2, 10756660), (4, 5378330), (5, 4302664), (8, 2689165), (10, 2151332), (19, 1132280), (20, 1075666), (38, 566140), (40, 537833), (76, 283070), (95, 226456), (152, 141535), (190, 113228), (380, 56614), (760, 28307)]