19984520

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29389}}^1$

素因数の和:29417

約数の個数: 32

約数和(自身を含む): 47611800

約数和(自身を除く): 27627280

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 29389, 58778, 117556, 146945, 235112, 293890, 499613, 587780, 999226, 1175560, 1998452, 2498065, 3996904, 4996130, 9992260, 19984520]

約数ペア:

[(1, 19984520), (2, 9992260), (4, 4996130), (5, 3996904), (8, 2498065), (10, 1998452), (17, 1175560), (20, 999226), (34, 587780), (40, 499613), (68, 293890), (85, 235112), (136, 146945), (170, 117556), (340, 58778), (680, 29389)]