21842980

素因数分解:

$2^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{107}}^1\times {\mathrm{173}}^1$

素因数の和:348

約数の個数: 48

約数和(自身を含む): 47355840

約数和(自身を除く): 25512860

約数列:

[1, 2, 4, 5, 10, 20, 59, 107, 118, 173, 214, 236, 295, 346, 428, 535, 590, 692, 865, 1070, 1180, 1730, 2140, 3460, 6313, 10207, 12626, 18511, 20414, 25252, 31565, 37022, 40828, 51035, 63130, 74044, 92555, 102070, 126260, 185110, 204140, 370220, 1092149, 2184298, 4368596, 5460745, 10921490, 21842980]

約数ペア:

[(1, 21842980), (2, 10921490), (4, 5460745), (5, 4368596), (10, 2184298), (20, 1092149), (59, 370220), (107, 204140), (118, 185110), (173, 126260), (214, 102070), (236, 92555), (295, 74044), (346, 63130), (428, 51035), (535, 40828), (590, 37022), (692, 31565), (865, 25252), (1070, 20414), (1180, 18511), (1730, 12626), (2140, 10207), (3460, 6313)]