21515704

素因数分解:

$2^3\times 7^3\times {\mathrm{7841}}^1$

素因数の和:7868

約数の個数: 32

約数和(自身を含む): 47052000

約数和(自身を除く): 25536296

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 196, 343, 392, 686, 1372, 2744, 7841, 15682, 31364, 54887, 62728, 109774, 219548, 384209, 439096, 768418, 1536836, 2689463, 3073672, 5378926, 10757852, 21515704]

約数ペア:

[(1, 21515704), (2, 10757852), (4, 5378926), (7, 3073672), (8, 2689463), (14, 1536836), (28, 768418), (49, 439096), (56, 384209), (98, 219548), (196, 109774), (343, 62728), (392, 54887), (686, 31364), (1372, 15682), (2744, 7841)]