20640422

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{67}}^2$

素因数の和:177

約数の個数: 36

約数和(自身を含む): 36364860

約数和(自身を除く): 15724438

約数列:

[1, 2, 11, 19, 22, 38, 67, 121, 134, 209, 242, 418, 737, 1273, 1474, 2299, 2546, 4489, 4598, 8107, 8978, 14003, 16214, 28006, 49379, 85291, 98758, 154033, 170582, 308066, 543169, 938201, 1086338, 1876402, 10320211, 20640422]

約数ペア:

[(1, 20640422), (2, 10320211), (11, 1876402), (19, 1086338), (22, 938201), (38, 543169), (67, 308066), (121, 170582), (134, 154033), (209, 98758), (242, 85291), (418, 49379), (737, 28006), (1273, 16214), (1474, 14003), (2299, 8978), (2546, 8107), (4489, 4598)]