19657260

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{15601}}^1$

素因数の和:15623

約数の個数: 72

約数和(自身を含む): 68149536

約数和(自身を除く): 48492276

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 15601, 31202, 46803, 62404, 78005, 93606, 109207, 140409, 156010, 187212, 218414, 234015, 280818, 312020, 327621, 436828, 468030, 546035, 561636, 655242, 702045, 936060, 982863, 1092070, 1310484, 1404090, 1638105, 1965726, 2184140, 2808180, 3276210, 3931452, 4914315, 6552420, 9828630, 19657260]

約数ペア:

[(1, 19657260), (2, 9828630), (3, 6552420), (4, 4914315), (5, 3931452), (6, 3276210), (7, 2808180), (9, 2184140), (10, 1965726), (12, 1638105), (14, 1404090), (15, 1310484), (18, 1092070), (20, 982863), (21, 936060), (28, 702045), (30, 655242), (35, 561636), (36, 546035), (42, 468030), (45, 436828), (60, 327621), (63, 312020), (70, 280818), (84, 234015), (90, 218414), (105, 187212), (126, 156010), (140, 140409), (180, 109207), (210, 93606), (252, 78005), (315, 62404), (420, 46803), (630, 31202), (1260, 15601)]