21195278

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{59}}^1\times {\mathrm{337}}^1$

素因数の和:452

約数の個数: 32

約数和(自身を含む): 35773920

約数和(自身を除く): 14578642

約数列:

[1, 2, 13, 26, 41, 59, 82, 118, 337, 533, 674, 767, 1066, 1534, 2419, 4381, 4838, 8762, 13817, 19883, 27634, 31447, 39766, 62894, 179621, 258479, 359242, 516958, 815203, 1630406, 10597639, 21195278]

約数ペア:

[(1, 21195278), (2, 10597639), (13, 1630406), (26, 815203), (41, 516958), (59, 359242), (82, 258479), (118, 179621), (337, 62894), (533, 39766), (674, 31447), (767, 27634), (1066, 19883), (1534, 13817), (2419, 8762), (4381, 4838)]