209972280

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{249967}}^1$

素因数の和:249988

約数の個数: 64

約数和(自身を含む): 719907840

約数和(自身を除く): 509935560

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, 249967, 499934, 749901, 999868, 1249835, 1499802, 1749769, 1999736, 2499670, 2999604, 3499538, 3749505, 4999340, 5249307, 5999208, 6999076, 7499010, 8748845, 9998680, 10498614, 13998152, 14998020, 17497690, 20997228, 26246535, 29996040, 34995380, 41994456, 52493070, 69990760, 104986140, 209972280]

約数ペア:

[(1, 209972280), (2, 104986140), (3, 69990760), (4, 52493070), (5, 41994456), (6, 34995380), (7, 29996040), (8, 26246535), (10, 20997228), (12, 17497690), (14, 14998020), (15, 13998152), (20, 10498614), (21, 9998680), (24, 8748845), (28, 7499010), (30, 6999076), (35, 5999208), (40, 5249307), (42, 4999340), (56, 3749505), (60, 3499538), (70, 2999604), (84, 2499670), (105, 1999736), (120, 1749769), (140, 1499802), (168, 1249835), (210, 999868), (280, 749901), (420, 499934), (840, 249967)]