281980251

素因数分解:

$3^3\times 7^2\times {\mathrm{131}}^1\times {\mathrm{1627}}^1$

素因数の和:1781

約数の個数: 48

約数和(自身を含む): 489962880

約数和(自身を除く): 207982629

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 131, 147, 189, 393, 441, 917, 1179, 1323, 1627, 2751, 3537, 4881, 6419, 8253, 11389, 14643, 19257, 24759, 34167, 43929, 57771, 79723, 102501, 173313, 213137, 239169, 307503, 639411, 717507, 1491959, 1918233, 2152521, 4475877, 5754699, 10443713, 13427631, 31331139, 40282893, 93993417, 281980251]

約数ペア:

[(1, 281980251), (3, 93993417), (7, 40282893), (9, 31331139), (21, 13427631), (27, 10443713), (49, 5754699), (63, 4475877), (131, 2152521), (147, 1918233), (189, 1491959), (393, 717507), (441, 639411), (917, 307503), (1179, 239169), (1323, 213137), (1627, 173313), (2751, 102501), (3537, 79723), (4881, 57771), (6419, 43929), (8253, 34167), (11389, 24759), (14643, 19257)]