18472440

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{21991}}^1$

素因数の和:22012

約数の個数: 64

約数和(自身を含む): 63336960

約数和(自身を除く): 44864520

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 21991, 43982, 65973, 87964, 109955, 131946, 153937, 175928, 219910, 263892, 307874, 329865, 439820, 461811, 527784, 615748, 659730, 769685, 879640, 923622, 1231496, 1319460, 1539370, 1847244, 2309055, 2638920, 3078740, 3694488, 4618110, 6157480, 9236220, 18472440]

約数ペア:

[(1, 18472440), (2, 9236220), (3, 6157480), (4, 4618110), (5, 3694488), (6, 3078740), (7, 2638920), (8, 2309055), (10, 1847244), (12, 1539370), (14, 1319460), (15, 1231496), (20, 923622), (21, 879640), (24, 769685), (28, 659730), (30, 615748), (35, 527784), (40, 461811), (42, 439820), (56, 329865), (60, 307874), (70, 263892), (84, 219910), (105, 175928), (120, 153937), (140, 131946), (168, 109955), (210, 87964), (280, 65973), (420, 43982), (840, 21991)]