15990172

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{617}}^1$

素因数の和:682

約数の個数: 48

約数和(自身を含む): 33223680

約数和(自身を除く): 17233508

約数列:

[1, 2, 4, 11, 19, 22, 31, 38, 44, 62, 76, 124, 209, 341, 418, 589, 617, 682, 836, 1178, 1234, 1364, 2356, 2468, 6479, 6787, 11723, 12958, 13574, 19127, 23446, 25916, 27148, 38254, 46892, 76508, 128953, 210397, 257906, 363413, 420794, 515812, 726826, 841588, 1453652, 3997543, 7995086, 15990172]

約数ペア:

[(1, 15990172), (2, 7995086), (4, 3997543), (11, 1453652), (19, 841588), (22, 726826), (31, 515812), (38, 420794), (44, 363413), (62, 257906), (76, 210397), (124, 128953), (209, 76508), (341, 46892), (418, 38254), (589, 27148), (617, 25916), (682, 23446), (836, 19127), (1178, 13574), (1234, 12958), (1364, 11723), (2356, 6787), (2468, 6479)]