20484100

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{2251}}^1$

素因数の和:2285

約数の個数: 72

約数和(自身を含む): 54732608

約数和(自身を除く): 34248508

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 25, 26, 28, 35, 50, 52, 65, 70, 91, 100, 130, 140, 175, 182, 260, 325, 350, 364, 455, 650, 700, 910, 1300, 1820, 2251, 2275, 4502, 4550, 9004, 9100, 11255, 15757, 22510, 29263, 31514, 45020, 56275, 58526, 63028, 78785, 112550, 117052, 146315, 157570, 204841, 225100, 292630, 315140, 393925, 409682, 585260, 731575, 787850, 819364, 1024205, 1463150, 1575700, 2048410, 2926300, 4096820, 5121025, 10242050, 20484100]

約数ペア:

[(1, 20484100), (2, 10242050), (4, 5121025), (5, 4096820), (7, 2926300), (10, 2048410), (13, 1575700), (14, 1463150), (20, 1024205), (25, 819364), (26, 787850), (28, 731575), (35, 585260), (50, 409682), (52, 393925), (65, 315140), (70, 292630), (91, 225100), (100, 204841), (130, 157570), (140, 146315), (175, 117052), (182, 112550), (260, 78785), (325, 63028), (350, 58526), (364, 56275), (455, 45020), (650, 31514), (700, 29263), (910, 22510), (1300, 15757), (1820, 11255), (2251, 9100), (2275, 9004), (4502, 4550)]