81841890

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{209851}}^1$

素因数の和:209874

約数の個数: 32

約数和(自身を含む): 211530816

約数和(自身を除く): 129688926

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 209851, 419702, 629553, 1049255, 1259106, 2098510, 2728063, 3147765, 5456126, 6295530, 8184189, 13640315, 16368378, 27280630, 40920945, 81841890]

約数ペア:

[(1, 81841890), (2, 40920945), (3, 27280630), (5, 16368378), (6, 13640315), (10, 8184189), (13, 6295530), (15, 5456126), (26, 3147765), (30, 2728063), (39, 2098510), (65, 1259106), (78, 1049255), (130, 629553), (195, 419702), (390, 209851)]