21651890

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{151}}^1\times {\mathrm{1103}}^1$

素因数の和:1274

約数の個数: 32

約数和(自身を含む): 42287616

約数和(自身を除く): 20635726

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 151, 302, 755, 1103, 1510, 1963, 2206, 3926, 5515, 9815, 11030, 14339, 19630, 28678, 71695, 143390, 166553, 333106, 832765, 1665530, 2165189, 4330378, 10825945, 21651890]

約数ペア:

[(1, 21651890), (2, 10825945), (5, 4330378), (10, 2165189), (13, 1665530), (26, 832765), (65, 333106), (130, 166553), (151, 143390), (302, 71695), (755, 28678), (1103, 19630), (1510, 14339), (1963, 11030), (2206, 9815), (3926, 5515)]