21302120

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{76079}}^1$

素因数の和:76097

約数の個数: 32

約数和(自身を含む): 54777600

約数和(自身を除く): 33475480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 76079, 152158, 304316, 380395, 532553, 608632, 760790, 1065106, 1521580, 2130212, 2662765, 3043160, 4260424, 5325530, 10651060, 21302120]

約数ペア:

[(1, 21302120), (2, 10651060), (4, 5325530), (5, 4260424), (7, 3043160), (8, 2662765), (10, 2130212), (14, 1521580), (20, 1065106), (28, 760790), (35, 608632), (40, 532553), (56, 380395), (70, 304316), (140, 152158), (280, 76079)]