21436016

素因数分解:

$2^4\times 7^1\times {\mathrm{43}}^1\times {\mathrm{4451}}^1$

素因数の和:4509

約数の個数: 40

約数和(自身を含む): 48580224

約数和(自身を除く): 27144208

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 43, 56, 86, 112, 172, 301, 344, 602, 688, 1204, 2408, 4451, 4816, 8902, 17804, 31157, 35608, 62314, 71216, 124628, 191393, 249256, 382786, 498512, 765572, 1339751, 1531144, 2679502, 3062288, 5359004, 10718008, 21436016]

約数ペア:

[(1, 21436016), (2, 10718008), (4, 5359004), (7, 3062288), (8, 2679502), (14, 1531144), (16, 1339751), (28, 765572), (43, 498512), (56, 382786), (86, 249256), (112, 191393), (172, 124628), (301, 71216), (344, 62314), (602, 35608), (688, 31157), (1204, 17804), (2408, 8902), (4451, 4816)]