21307726

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1\times {\mathrm{199}}^1$

素因数の和:400

約数の個数: 32

約数和(自身を含む): 36403200

約数和(自身を除く): 15095474

約数列:

[1, 2, 11, 22, 31, 62, 157, 199, 314, 341, 398, 682, 1727, 2189, 3454, 4378, 4867, 6169, 9734, 12338, 31243, 53537, 62486, 67859, 107074, 135718, 343673, 687346, 968533, 1937066, 10653863, 21307726]

約数ペア:

[(1, 21307726), (2, 10653863), (11, 1937066), (22, 968533), (31, 687346), (62, 343673), (157, 135718), (199, 107074), (314, 67859), (341, 62486), (398, 53537), (682, 31243), (1727, 12338), (2189, 9734), (3454, 6169), (4378, 4867)]