20163946439

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{61}}^2\times {\mathrm{181}}^1$

素因数の和:377

約数の個数: 72

約数和(自身を含む): 26372533824

約数和(自身を除く): 6208587385

約数列:

[1, 7, 13, 47, 49, 61, 91, 181, 329, 427, 611, 637, 793, 1267, 2303, 2353, 2867, 2989, 3721, 4277, 5551, 8507, 8869, 11041, 16471, 20069, 26047, 29939, 37271, 38857, 48373, 59549, 77287, 110591, 115297, 140483, 143533, 174887, 182329, 260897, 338611, 416843, 518927, 541009, 673501, 774137, 1004731, 1224209, 1826279, 2273531, 2370277, 3632489, 4714507, 5418959, 6746051, 7033117, 8569463, 8755513, 15914717, 25427423, 31654547, 33001549, 47222357, 61288591, 111403019, 221581829, 330556499, 411509111, 429020137, 1551072803, 2880563777, 20163946439]

約数ペア:

[(1, 20163946439), (7, 2880563777), (13, 1551072803), (47, 429020137), (49, 411509111), (61, 330556499), (91, 221581829), (181, 111403019), (329, 61288591), (427, 47222357), (611, 33001549), (637, 31654547), (793, 25427423), (1267, 15914717), (2303, 8755513), (2353, 8569463), (2867, 7033117), (2989, 6746051), (3721, 5418959), (4277, 4714507), (5551, 3632489), (8507, 2370277), (8869, 2273531), (11041, 1826279), (16471, 1224209), (20069, 1004731), (26047, 774137), (29939, 673501), (37271, 541009), (38857, 518927), (48373, 416843), (59549, 338611), (77287, 260897), (110591, 182329), (115297, 174887), (140483, 143533)]