19977120

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{13873}}^1$

素因数の和:13894

約数の個数: 72

約数和(自身を含む): 68176836

約数和(自身を除く): 48199716

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, 13873, 27746, 41619, 55492, 69365, 83238, 110984, 124857, 138730, 166476, 208095, 221968, 249714, 277460, 332952, 416190, 443936, 499428, 554920, 624285, 665904, 832380, 998856, 1109840, 1248570, 1331808, 1664760, 1997712, 2219680, 2497140, 3329520, 3995424, 4994280, 6659040, 9988560, 19977120]

約数ペア:

[(1, 19977120), (2, 9988560), (3, 6659040), (4, 4994280), (5, 3995424), (6, 3329520), (8, 2497140), (9, 2219680), (10, 1997712), (12, 1664760), (15, 1331808), (16, 1248570), (18, 1109840), (20, 998856), (24, 832380), (30, 665904), (32, 624285), (36, 554920), (40, 499428), (45, 443936), (48, 416190), (60, 332952), (72, 277460), (80, 249714), (90, 221968), (96, 208095), (120, 166476), (144, 138730), (160, 124857), (180, 110984), (240, 83238), (288, 69365), (360, 55492), (480, 41619), (720, 27746), (1440, 13873)]