20837115

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{383}}^1$

素因数の和:441

約数の個数: 64

約数和(自身を含む): 41287680

約数和(自身を除く): 20450565

約数列:

[1, 3, 5, 9, 13, 15, 27, 31, 39, 45, 65, 93, 117, 135, 155, 195, 279, 351, 383, 403, 465, 585, 837, 1149, 1209, 1395, 1755, 1915, 2015, 3447, 3627, 4185, 4979, 5745, 6045, 10341, 10881, 11873, 14937, 17235, 18135, 24895, 35619, 44811, 51705, 54405, 59365, 74685, 106857, 134433, 154349, 178095, 224055, 320571, 463047, 534285, 672165, 771745, 1389141, 1602855, 2315235, 4167423, 6945705, 20837115]

約数ペア:

[(1, 20837115), (3, 6945705), (5, 4167423), (9, 2315235), (13, 1602855), (15, 1389141), (27, 771745), (31, 672165), (39, 534285), (45, 463047), (65, 320571), (93, 224055), (117, 178095), (135, 154349), (155, 134433), (195, 106857), (279, 74685), (351, 59365), (383, 54405), (403, 51705), (465, 44811), (585, 35619), (837, 24895), (1149, 18135), (1209, 17235), (1395, 14937), (1755, 11873), (1915, 10881), (2015, 10341), (3447, 6045), (3627, 5745), (4185, 4979)]