20961981360

素因数分解:

$2^4\times 3^3\times 5^1\times {\mathrm{9704621}}^1$

素因数の和:9704643

約数の個数: 80

約数和(自身を含む): 72202387680

約数和(自身を除く): 51240406320

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 36, 40, 45, 48, 54, 60, 72, 80, 90, 108, 120, 135, 144, 180, 216, 240, 270, 360, 432, 540, 720, 1080, 2160, 9704621, 19409242, 29113863, 38818484, 48523105, 58227726, 77636968, 87341589, 97046210, 116455452, 145569315, 155273936, 174683178, 194092420, 232910904, 262024767, 291138630, 349366356, 388184840, 436707945, 465821808, 524049534, 582277260, 698732712, 776369680, 873415890, 1048099068, 1164554520, 1310123835, 1397465424, 1746831780, 2096198136, 2329109040, 2620247670, 3493663560, 4192396272, 5240495340, 6987327120, 10480990680, 20961981360]

約数ペア:

[(1, 20961981360), (2, 10480990680), (3, 6987327120), (4, 5240495340), (5, 4192396272), (6, 3493663560), (8, 2620247670), (9, 2329109040), (10, 2096198136), (12, 1746831780), (15, 1397465424), (16, 1310123835), (18, 1164554520), (20, 1048099068), (24, 873415890), (27, 776369680), (30, 698732712), (36, 582277260), (40, 524049534), (45, 465821808), (48, 436707945), (54, 388184840), (60, 349366356), (72, 291138630), (80, 262024767), (90, 232910904), (108, 194092420), (120, 174683178), (135, 155273936), (144, 145569315), (180, 116455452), (216, 97046210), (240, 87341589), (270, 77636968), (360, 58227726), (432, 48523105), (540, 38818484), (720, 29113863), (1080, 19409242), (2160, 9704621)]