19799260

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{271}}^1\times {\mathrm{281}}^1$

素因数の和:574

約数の個数: 48

約数和(自身を含む): 45101952

約数和(自身を除く): 25302692

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 271, 281, 542, 562, 1084, 1124, 1355, 1405, 2710, 2810, 3523, 3653, 5420, 5620, 7046, 7306, 14092, 14612, 17615, 18265, 35230, 36530, 70460, 73060, 76151, 152302, 304604, 380755, 761510, 989963, 1523020, 1979926, 3959852, 4949815, 9899630, 19799260]

約数ペア:

[(1, 19799260), (2, 9899630), (4, 4949815), (5, 3959852), (10, 1979926), (13, 1523020), (20, 989963), (26, 761510), (52, 380755), (65, 304604), (130, 152302), (260, 76151), (271, 73060), (281, 70460), (542, 36530), (562, 35230), (1084, 18265), (1124, 17615), (1355, 14612), (1405, 14092), (2710, 7306), (2810, 7046), (3523, 5620), (3653, 5420)]