2178680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{251}}^1$

素因数の和:300

約数の個数: 64

約数和(自身を含む): 5806080

約数和(自身を除く): 3627400

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 56, 62, 70, 124, 140, 155, 217, 248, 251, 280, 310, 434, 502, 620, 868, 1004, 1085, 1240, 1255, 1736, 1757, 2008, 2170, 2510, 3514, 4340, 5020, 7028, 7781, 8680, 8785, 10040, 14056, 15562, 17570, 31124, 35140, 38905, 54467, 62248, 70280, 77810, 108934, 155620, 217868, 272335, 311240, 435736, 544670, 1089340, 2178680]

約数ペア:

[(1, 2178680), (2, 1089340), (4, 544670), (5, 435736), (7, 311240), (8, 272335), (10, 217868), (14, 155620), (20, 108934), (28, 77810), (31, 70280), (35, 62248), (40, 54467), (56, 38905), (62, 35140), (70, 31124), (124, 17570), (140, 15562), (155, 14056), (217, 10040), (248, 8785), (251, 8680), (280, 7781), (310, 7028), (434, 5020), (502, 4340), (620, 3514), (868, 2510), (1004, 2170), (1085, 2008), (1240, 1757), (1255, 1736)]