20807220

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{463}}^1$

素因数の和:589

約数の個数: 96

約数和(自身を含む): 67350528

約数和(自身を除く): 46543308

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 107, 140, 210, 214, 321, 420, 428, 463, 535, 642, 749, 926, 1070, 1284, 1389, 1498, 1605, 1852, 2140, 2247, 2315, 2778, 2996, 3210, 3241, 3745, 4494, 4630, 5556, 6420, 6482, 6945, 7490, 8988, 9260, 9723, 11235, 12964, 13890, 14980, 16205, 19446, 22470, 27780, 32410, 38892, 44940, 48615, 49541, 64820, 97230, 99082, 148623, 194460, 198164, 247705, 297246, 346787, 495410, 594492, 693574, 743115, 990820, 1040361, 1387148, 1486230, 1733935, 2080722, 2972460, 3467870, 4161444, 5201805, 6935740, 10403610, 20807220]

約数ペア:

[(1, 20807220), (2, 10403610), (3, 6935740), (4, 5201805), (5, 4161444), (6, 3467870), (7, 2972460), (10, 2080722), (12, 1733935), (14, 1486230), (15, 1387148), (20, 1040361), (21, 990820), (28, 743115), (30, 693574), (35, 594492), (42, 495410), (60, 346787), (70, 297246), (84, 247705), (105, 198164), (107, 194460), (140, 148623), (210, 99082), (214, 97230), (321, 64820), (420, 49541), (428, 48615), (463, 44940), (535, 38892), (642, 32410), (749, 27780), (926, 22470), (1070, 19446), (1284, 16205), (1389, 14980), (1498, 13890), (1605, 12964), (1852, 11235), (2140, 9723), (2247, 9260), (2315, 8988), (2778, 7490), (2996, 6945), (3210, 6482), (3241, 6420), (3745, 5556), (4494, 4630)]