640908

素因数分解:

$2^2\times 3^2\times {\mathrm{19}}^1\times {\mathrm{937}}^1$

素因数の和:966

約数の個数: 36

約数和(自身を含む): 1707160

約数和(自身を除く): 1066252

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 38, 57, 76, 114, 171, 228, 342, 684, 937, 1874, 2811, 3748, 5622, 8433, 11244, 16866, 17803, 33732, 35606, 53409, 71212, 106818, 160227, 213636, 320454, 640908]

約数ペア:

[(1, 640908), (2, 320454), (3, 213636), (4, 160227), (6, 106818), (9, 71212), (12, 53409), (18, 35606), (19, 33732), (36, 17803), (38, 16866), (57, 11244), (76, 8433), (114, 5622), (171, 3748), (228, 2811), (342, 1874), (684, 937)]