21953290

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1$

素因数の和:187

約数の個数: 64

約数和(自身を含む): 44595360

約数和(自身を除く): 22642070

約数列:

[1, 2, 5, 10, 17, 29, 34, 58, 61, 73, 85, 122, 145, 146, 170, 290, 305, 365, 493, 610, 730, 986, 1037, 1241, 1769, 2074, 2117, 2465, 2482, 3538, 4234, 4453, 4930, 5185, 6205, 8845, 8906, 10370, 10585, 12410, 17690, 21170, 22265, 30073, 35989, 44530, 60146, 71978, 75701, 129137, 150365, 151402, 179945, 258274, 300730, 359890, 378505, 645685, 757010, 1291370, 2195329, 4390658, 10976645, 21953290]

約数ペア:

[(1, 21953290), (2, 10976645), (5, 4390658), (10, 2195329), (17, 1291370), (29, 757010), (34, 645685), (58, 378505), (61, 359890), (73, 300730), (85, 258274), (122, 179945), (145, 151402), (146, 150365), (170, 129137), (290, 75701), (305, 71978), (365, 60146), (493, 44530), (610, 35989), (730, 30073), (986, 22265), (1037, 21170), (1241, 17690), (1769, 12410), (2074, 10585), (2117, 10370), (2465, 8906), (2482, 8845), (3538, 6205), (4234, 5185), (4453, 4930)]