665420980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{16561}}^1$

素因数の和:16625

約数の個数: 72

約数和(自身を含む): 1665275976

約数和(自身を除く): 999854996

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 41, 49, 70, 82, 98, 140, 164, 196, 205, 245, 287, 410, 490, 574, 820, 980, 1148, 1435, 2009, 2870, 4018, 5740, 8036, 10045, 16561, 20090, 33122, 40180, 66244, 82805, 115927, 165610, 231854, 331220, 463708, 579635, 679001, 811489, 1159270, 1358002, 1622978, 2318540, 2716004, 3245956, 3395005, 4057445, 4753007, 6790010, 8114890, 9506014, 13580020, 16229780, 19012028, 23765035, 33271049, 47530070, 66542098, 95060140, 133084196, 166355245, 332710490, 665420980]

約数ペア:

[(1, 665420980), (2, 332710490), (4, 166355245), (5, 133084196), (7, 95060140), (10, 66542098), (14, 47530070), (20, 33271049), (28, 23765035), (35, 19012028), (41, 16229780), (49, 13580020), (70, 9506014), (82, 8114890), (98, 6790010), (140, 4753007), (164, 4057445), (196, 3395005), (205, 3245956), (245, 2716004), (287, 2318540), (410, 1622978), (490, 1358002), (574, 1159270), (820, 811489), (980, 679001), (1148, 579635), (1435, 463708), (2009, 331220), (2870, 231854), (4018, 165610), (5740, 115927), (8036, 82805), (10045, 66244), (16561, 40180), (20090, 33122)]