20194960

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{131}}^1$

素因数の和:232

約数の個数: 80

約数和(自身を含む): 49496832

約数和(自身を除く): 29301872

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 47, 80, 82, 94, 131, 164, 188, 205, 235, 262, 328, 376, 410, 470, 524, 655, 656, 752, 820, 940, 1048, 1310, 1640, 1880, 1927, 2096, 2620, 3280, 3760, 3854, 5240, 5371, 6157, 7708, 9635, 10480, 10742, 12314, 15416, 19270, 21484, 24628, 26855, 30785, 30832, 38540, 42968, 49256, 53710, 61570, 77080, 85936, 98512, 107420, 123140, 154160, 214840, 246280, 252437, 429680, 492560, 504874, 1009748, 1262185, 2019496, 2524370, 4038992, 5048740, 10097480, 20194960]

約数ペア:

[(1, 20194960), (2, 10097480), (4, 5048740), (5, 4038992), (8, 2524370), (10, 2019496), (16, 1262185), (20, 1009748), (40, 504874), (41, 492560), (47, 429680), (80, 252437), (82, 246280), (94, 214840), (131, 154160), (164, 123140), (188, 107420), (205, 98512), (235, 85936), (262, 77080), (328, 61570), (376, 53710), (410, 49256), (470, 42968), (524, 38540), (655, 30832), (656, 30785), (752, 26855), (820, 24628), (940, 21484), (1048, 19270), (1310, 15416), (1640, 12314), (1880, 10742), (1927, 10480), (2096, 9635), (2620, 7708), (3280, 6157), (3760, 5371), (3854, 5240)]