18321919

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1\times {\mathrm{109}}^1$

素因数の和:223

約数の個数: 32

約数和(自身を含む): 24076800

約数和(自身を除く): 5754881

約数列:

[1, 7, 11, 37, 59, 77, 109, 259, 407, 413, 649, 763, 1199, 2183, 2849, 4033, 4543, 6431, 8393, 15281, 24013, 28231, 44363, 45017, 70741, 168091, 237947, 310541, 495187, 1665629, 2617417, 18321919]

約数ペア:

[(1, 18321919), (7, 2617417), (11, 1665629), (37, 495187), (59, 310541), (77, 237947), (109, 168091), (259, 70741), (407, 45017), (413, 44363), (649, 28231), (763, 24013), (1199, 15281), (2183, 8393), (2849, 6431), (4033, 4543)]