20319026

素因数分解:

$2^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{389}}^1$

素因数の和:459

約数の個数: 48

約数和(自身を含む): 39213720

約数和(自身を除く): 18894694

約数列:

[1, 2, 7, 13, 14, 26, 41, 49, 82, 91, 98, 182, 287, 389, 533, 574, 637, 778, 1066, 1274, 2009, 2723, 3731, 4018, 5057, 5446, 7462, 10114, 15949, 19061, 26117, 31898, 35399, 38122, 52234, 70798, 111643, 207337, 223286, 247793, 414674, 495586, 781501, 1451359, 1563002, 2902718, 10159513, 20319026]

約数ペア:

[(1, 20319026), (2, 10159513), (7, 2902718), (13, 1563002), (14, 1451359), (26, 781501), (41, 495586), (49, 414674), (82, 247793), (91, 223286), (98, 207337), (182, 111643), (287, 70798), (389, 52234), (533, 38122), (574, 35399), (637, 31898), (778, 26117), (1066, 19061), (1274, 15949), (2009, 10114), (2723, 7462), (3731, 5446), (4018, 5057)]