21340644

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{619}}^1$

素因数の和:669

約数の個数: 72

約数和(自身を含む): 57183840

約数和(自身を除く): 35843196

約数列:

[1, 2, 3, 4, 6, 12, 13, 17, 26, 34, 39, 51, 52, 68, 78, 102, 156, 169, 204, 221, 338, 442, 507, 619, 663, 676, 884, 1014, 1238, 1326, 1857, 2028, 2476, 2652, 2873, 3714, 5746, 7428, 8047, 8619, 10523, 11492, 16094, 17238, 21046, 24141, 31569, 32188, 34476, 42092, 48282, 63138, 96564, 104611, 126276, 136799, 209222, 273598, 313833, 410397, 418444, 547196, 627666, 820794, 1255332, 1641588, 1778387, 3556774, 5335161, 7113548, 10670322, 21340644]

約数ペア:

[(1, 21340644), (2, 10670322), (3, 7113548), (4, 5335161), (6, 3556774), (12, 1778387), (13, 1641588), (17, 1255332), (26, 820794), (34, 627666), (39, 547196), (51, 418444), (52, 410397), (68, 313833), (78, 273598), (102, 209222), (156, 136799), (169, 126276), (204, 104611), (221, 96564), (338, 63138), (442, 48282), (507, 42092), (619, 34476), (663, 32188), (676, 31569), (884, 24141), (1014, 21046), (1238, 17238), (1326, 16094), (1857, 11492), (2028, 10523), (2476, 8619), (2652, 8047), (2873, 7428), (3714, 5746)]