20316208

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{1297}}^1$

素因数の和:1405

約数の個数: 40

約数和(自身を含む): 43457040

約数和(自身を除く): 23140832

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 89, 176, 178, 356, 712, 979, 1297, 1424, 1958, 2594, 3916, 5188, 7832, 10376, 14267, 15664, 20752, 28534, 57068, 114136, 115433, 228272, 230866, 461732, 923464, 1269763, 1846928, 2539526, 5079052, 10158104, 20316208]

約数ペア:

[(1, 20316208), (2, 10158104), (4, 5079052), (8, 2539526), (11, 1846928), (16, 1269763), (22, 923464), (44, 461732), (88, 230866), (89, 228272), (176, 115433), (178, 114136), (356, 57068), (712, 28534), (979, 20752), (1297, 15664), (1424, 14267), (1958, 10376), (2594, 7832), (3916, 5188)]