19710180

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{15643}}^1$

素因数の和:15665

約数の個数: 72

約数和(自身を含む): 68332992

約数和(自身を除く): 48622812

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, 15643, 31286, 46929, 62572, 78215, 93858, 109501, 140787, 156430, 187716, 219002, 234645, 281574, 312860, 328503, 438004, 469290, 547505, 563148, 657006, 703935, 938580, 985509, 1095010, 1314012, 1407870, 1642515, 1971018, 2190020, 2815740, 3285030, 3942036, 4927545, 6570060, 9855090, 19710180]

約数ペア:

[(1, 19710180), (2, 9855090), (3, 6570060), (4, 4927545), (5, 3942036), (6, 3285030), (7, 2815740), (9, 2190020), (10, 1971018), (12, 1642515), (14, 1407870), (15, 1314012), (18, 1095010), (20, 985509), (21, 938580), (28, 703935), (30, 657006), (35, 563148), (36, 547505), (42, 469290), (45, 438004), (60, 328503), (63, 312860), (70, 281574), (84, 234645), (90, 219002), (105, 187716), (126, 156430), (140, 140787), (180, 109501), (210, 93858), (252, 78215), (315, 62572), (420, 46929), (630, 31286), (1260, 15643)]