19810080

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{13757}}^1$

素因数の和:13778

約数の個数: 72

約数和(自身を含む): 67606812

約数和(自身を除く): 47796732

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 72, 80, 90, 96, 120, 144, 160, 180, 240, 288, 360, 480, 720, 1440, 13757, 27514, 41271, 55028, 68785, 82542, 110056, 123813, 137570, 165084, 206355, 220112, 247626, 275140, 330168, 412710, 440224, 495252, 550280, 619065, 660336, 825420, 990504, 1100560, 1238130, 1320672, 1650840, 1981008, 2201120, 2476260, 3301680, 3962016, 4952520, 6603360, 9905040, 19810080]

約数ペア:

[(1, 19810080), (2, 9905040), (3, 6603360), (4, 4952520), (5, 3962016), (6, 3301680), (8, 2476260), (9, 2201120), (10, 1981008), (12, 1650840), (15, 1320672), (16, 1238130), (18, 1100560), (20, 990504), (24, 825420), (30, 660336), (32, 619065), (36, 550280), (40, 495252), (45, 440224), (48, 412710), (60, 330168), (72, 275140), (80, 247626), (90, 220112), (96, 206355), (120, 165084), (144, 137570), (160, 123813), (180, 110056), (240, 82542), (288, 68785), (360, 55028), (480, 41271), (720, 27514), (1440, 13757)]